Emerald hack: Pokémon Emerald Horizons - Emerald Difficulty Hack [Complete, v1.11f ft. New Rocket Storyline, Boss Gauntlet, Gen 1-8, Side Quests, and QoL features]

[BrandonXL]

After 70 hours in game (probably 40-45 actual), ive finally beaten the elite 4!

This was the toughest game ive ever played, pokemon wise. absoluty amazing expericence and i cannot recommend it more. once i got past the first gym i was fine most of the time. the battles against the auro pokemon were tough, especially groudon.
hardets battle was with steven in the double battle against Team Aqua. he had 3 ground/fire types against a water team. i couldnt keep any of them alive more than a turn.
im not much of a team builder. Winning team was mostly ubers. i did have around 30 mons in the pc, all lv 100, that i tried to cycle through. things like salamence, garchomp, gyarados, diance, chaldelure, articuno, azumarill, aegislash, volcarona, hydreigon, porygon2, chansey, swampert, blaziken. all tried and failed.

This was the team who finally managed to beat it.

Mega Mewtwo Y - Mewtwoite Y
Rayquazza - White Herb
Dragapult - Choice Specs/Band
Tyranitar - Weakness Policy
Zapdos - Life Orb
Dracovish - Choice Scarf

Dracovish honestly did nothing in all 5 fights. poor pick. none of the elite 4 are weak to water. it did a bit of chip damage but i would have preferred something else. i didnt bother with status spam, spikes, field changes, speed of other stat changes. this was brute force. no save scumming. i did restart each battle several times however until i found out what worked.

Mewtwo was the MVP. the ability to change moves inbetween fights helped. Mewtwo swepped the dragon trainer with just ice beam. getting mewtwo involves a lot of tough trainers but i think it was worth it. i did them all at the lv 100 cap and they were tough. good practice for the elite 4.

ive since gone and beaten steven and red. might give the bosh rush a go soon.

some questions:
how do i get to the isle of armour?
i accidently defeated lugia. will it respwan again if i beat the elite 4?
where is Ho-oh? the sceenshot makes it look like its ontop of the boss rush pyramid, which makes sense as a winners prize as lugia was the red prize.
will battle frontier be added?

once again an amazing experience. truly well done to you. i made this account just to say how much i enjoyed this.

There's nothing wrong with a mostly Ubers team, especially when most of the E4 is Ubers themselves! And yeah...that Team Aqua multi-battle was intentionally pretty one-sided haha.
I'm personally surprised Dracovish wasn't able to revenge kill + chunk the next mon; there are a good amount of Dracovish clears in the E4. Mewtwo is definitely fair game, especially if you have to go through Blue (who may be the hardest Trainer, depending on your team comp).

1. Isle of Armor is just north of Pacifidlog; there's a little land strip you can surf to.
2. Unfortunately, the way things are set right now, legends are a one-time encounter.
3. Ho-Oh is accessible after beating Red; there's an NPC inside the pyramid that will take you to the top.
4. Battle Frontier and the last five quests are the goal for the last major update, but I am currently taking a little break since v1.10/v1.11 took quite a bit of time.

Thank you so much for the kind words; it really does mean a lot and I'm always so happy to hear about run MVPs, hardest fights, etc. This was a real treat for me to read :)

Where can I find a Nest Ball? They're supposed to be available in Verdanturf Town but they're not there even after beating Watson.

The marts are all the same and become increasingly more diverse as you get more badges; Nest Balls (and other balls) are in the Lilycove Dept. Store.

 

[henrylockwood]

I don't know how to beat kyogre and the rest of archies or whatever his name is team
please help

 

[BrandonXL]

I don't know how to beat kyogre and the rest of archies or whatever his name is team
please help

Hi, you made it that far already, so you definitely can beat this as well! Some good strategies could be sunny weather, Sturdy, Assault Vest, Unaware, or even Focus Sash.

 

[henrylockwood]

Hi, you made it that far already, so you definitely can beat this as well! Some good strategies could be sunny weather, Sturdy, Assault Vest, Unaware, or even Focus Sash.

Appreciate it. Couple questions

1. Ability Capsules I bought them at some point now I can't find the store
2. The item shop everytime I go into one and click buy the screen goes black. It started happening after I got the department store unlocked so idk if that was intentional or not.
3. For the kyogre fight I have no clue what pokemon to even use. Could use a pointer there
4. Where do I get some of those items like focus sash, assault vest, leftovers etc. I have been completing quests to get some.
5. Last one, Is there a good way to make money besides completing quests?

Thank you for the help

 

[henrylockwood]

Scratch number 3 off, thank you zapdos!

Appreciate it. Couple questions

1. Ability Capsules I bought them at some point now I can't find the store
2. The item shop everytime I go into one and click buy the screen goes black. It started happening after I got the department store unlocked so idk if that was intentional or not.
3. For the kyogre fight I have no clue what pokemon to even use. Could use a pointer there
4. Where do I get some of those items like focus sash, assault vest, leftovers etc. I have been completing quests to get some.
5. Last one, Is there a good way to make money besides completing quests?

Thank you for the help

Scratch number 3 off, thank you Zapdos!

 

[rillyribbedking]

This hack is so good!! The amount of quests and variety in pokemon makes the hack feel so free, thank you so much for making it.
Currently I'm looking for an Ash-Greninja and bought the Froakie in the game corner but once I evolved it to Greninja neither of the ability changing items let me get Battle Bond.
Is Ash-Greninja in the hack and if so how do I get it?

 

[BrandonXL]

Appreciate it. Couple questions

1. Ability Capsules I bought them at some point now I can't find the store
2. The item shop everytime I go into one and click buy the screen goes black. It started happening after I got the department store unlocked so idk if that was intentional or not.
3. For the kyogre fight I have no clue what pokemon to even use. Could use a pointer there
4. Where do I get some of those items like focus sash, assault vest, leftovers etc. I have been completing quests to get some.
5. Last one, Is there a good way to make money besides completing quests?

Thank you for the help

1 and 2 are related; what you're encountering definitely is an unintentional bug, but I can't reproduce it on my end. I also haven't tinkered with anything that I believe would impact that. That's not to say that the bug doesn't exist, but I can't get it on my end. Generally, I like to ask if you applied the patch to a clean Trashman file, did you try to use any cheats, and what emulator are you using?

For 4, those good items are tied to beating Kanto/Johto trainers; I think if you battle everyone, you should have pretty decent money.

This hack is so good!! The amount of quests and variety in pokemon makes the hack feel so free, thank you so much for making it.
Currently I'm looking for an Ash-Greninja and bought the Froakie in the game corner but once I evolved it to Greninja neither of the ability changing items let me get Battle Bond.
Is Ash-Greninja in the hack and if so how do I get it?

I'm glad you're enjoying things so far; Ash-Greninja is not currently in the game, but I'll look to rectify that in the future. Apologies, but hope this doesn't hamper your enjoyment!

 

[rillyribbedking]

1 and 2 are related; what you're encountering definitely is an unintentional bug, but I can't reproduce it on my end. I also haven't tinkered with anything that I believe would impact that. That's not to say that the bug doesn't exist, but I can't get it on my end. Generally, I like to ask if you applied the patch to a clean Trashman file, did you try to use any cheats, and what emulator are you using?

For 4, those good items are tied to beating Kanto/Johto trainers; I think if you battle everyone, you should have pretty decent money.

I'm glad you're enjoying things so far; Ash-Greninja is not currently in the game, but I'll look to rectify that in the future. Apologies, but hope this doesn't hamper your enjoyment!

Ah thanks! Theres still another 900 pokemon to fill that teamslot lol

 

[Belialxo]

I've made an account just to say thank you for the great experience this game has provided!

I'll admit I haven't played many rom hacks, so I don't have a lot to compare to, but I did enjoy playing on a familiar setting (emerald map) and meet and learn about the new pkmn that I've missed (anything released after nitendo ds pretty much). My trainer card shows that I've played for 240h but I guess that's because the emulator speeds up. I've been playing for a week, quite a few hours every day.

My favorite part so far was the extra trainers/quests, with most of them being references to something. I've been trying to complete everything to 100% before moving to the next part of the game. And since Lilycove trainer battle (won't say the name to avoid spoilers) I've been revisiting old areas to catch shinies! The only part so far that I've ignored is the quest that starts at Slateport tents.

The game was above average difficulty at start, but then you can adapt as a player so you feel it gets easier. To be fair, quite a few (if not all) elite trainers and gyms could be soloed by a single pkmn, either with power up abilities or with held items. Or you could just play around the types and build a strategic team. Sometimes it takes a few tries to figure it out, you notice that the enemy uses different abilities depending on your actions and honestly you can use that to your advantage. The Pokevial having only one charge in the early game just makes you run extra trips to pokecenters or spend a lot of money on revives and pots. I understand that the first option it's probably there to prolong the gameplay time, but the second option leads to a dead end.

Personally, I've had the patience to go the extra trips and never had to buy revives and pots. I even maxed out the money by only beating the elite trainers after getting luck incense and using luck incense literally on every random trainer popping up ever since. However, going back in old areas to catch shiny versions (which costs ultra balls or lesser versions) and trying out strats (which costs mega stones, abilitycapsules, tms and lvlup trainer) ended up having zero money and no trainers to fight anymore (since I'm stuck in the story line).

Currently I'm stuck to the double fight with team aqua and I've got to say it feels very one sided. I've been testing out so many strategies but nothing worked so far. The fact that you have to go all the way back to a town to swap teams then go again in the cave to fight and see if that works and then repeat because it didn't.. I've been stuck for 3 days and all that back and forth with no results is getting pretty taxing to a point that is no longer fun unfortunately. I want to explore the rest of the game but it doesn't seem realistic to beat 2x mega + 2x Zmoves fighting you alone at the same time (because you get partnered up with someone that is completely useless). It's frustrating because it doesn't feel that you can do something better to improve, while your other team member just dies instantly every turn. Beating a hard fight as a player feels rewarding because you overcome the difficulties, but this duo fight just makes me demotivated to keep going.

I'd love to experience the rest of the game, beat the E4, catch the remaining legendaries, even attempt to complete a shiny pokedex. But remember that you choose to play a game to have fun and when that fun is lost you are not playing a game anymore, you are just doing chores..

Nevertheless, the creator is truly talented and did an amazing job. No doubt it'll only get better as it seems that each version seems to adapt to previous issues and keeps improving. I'd love to see if this creativity will expand to more games as well!

 

[Ninja Isabelle]

I've made an account just to say thank you for the great experience this game has provided!

I'll admit I haven't played many rom hacks, so I don't have a lot to compare to, but I did enjoy playing on a familiar setting (emerald map) and meet and learn about the new pkmn that I've missed (anything released after nitendo ds pretty much). My trainer card shows that I've played for 240h but I guess that's because the emulator speeds up. I've been playing for a week, quite a few hours every day.

My favorite part so far was the extra trainers/quests, with most of them being references to something. I've been trying to complete everything to 100% before moving to the next part of the game. And since Lilycove trainer battle (won't say the name to avoid spoilers) I've been revisiting old areas to catch shinies! The only part so far that I've ignored is the quest that starts at Slateport tents.

The game was above average difficulty at start, but then you can adapt as a player so you feel it gets easier. To be fair, quite a few (if not all) elite trainers and gyms could be soloed by a single pkmn, either with power up abilities or with held items. Or you could just play around the types and build a strategic team. Sometimes it takes a few tries to figure it out, you notice that the enemy uses different abilities depending on your actions and honestly you can use that to your advantage. The Pokevial having only one charge in the early game just makes you run extra trips to pokecenters or spend a lot of money on revives and pots. I understand that the first option it's probably there to prolong the gameplay time, but the second option leads to a dead end.

Personally, I've had the patience to go the extra trips and never had to buy revives and pots. I even maxed out the money by only beating the elite trainers after getting luck incense and using luck incense literally on every random trainer popping up ever since. However, going back in old areas to catch shiny versions (which costs ultra balls or lesser versions) and trying out strats (which costs mega stones, abilitycapsules, tms and lvlup trainer) ended up having zero money and no trainers to fight anymore (since I'm stuck in the story line).

Currently I'm stuck to the double fight with team aqua and I've got to say it feels very one sided. I've been testing out so many strategies but nothing worked so far. The fact that you have to go all the way back to a town to swap teams then go again in the cave to fight and see if that works and then repeat because it didn't.. I've been stuck for 3 days and all that back and forth with no results is getting pretty taxing to a point that is no longer fun unfortunately. I want to explore the rest of the game but it doesn't seem realistic to beat 2x mega + 2x Zmoves fighting you alone at the same time (because you get partnered up with someone that is completely useless). It's frustrating because it doesn't feel that you can do something better to improve, while your other team member just dies instantly every turn. Beating a hard fight as a player feels rewarding because you overcome the difficulties, but this duo fight just makes me demotivated to keep going.

I'd love to experience the rest of the game, beat the E4, catch the remaining legendaries, even attempt to complete a shiny pokedex. But remember that you choose to play a game to have fun and when that fun is lost you are not playing a game anymore, you are just doing chores..

Nevertheless, the creator is truly talented and did an amazing job. No doubt it'll only get better as it seems that each version seems to adapt to previous issues and keeps improving. I'd love to see if this creativity will expand to more games as well!

You're not alone in feeling that its too one sided. I wouldn't go as far too say emerald horizons is "amazing" or "talented" but I can understand the thought if you haven't played many romhacks. If you want to try one the best romhacks, give pokemon unbound a try. It has everything you could want and its made by the same person who made the "complete fire red upgrade" which is used by tons of people for their own hacks. So you can tell its going to be high quality.

 

[rillyribbedking]

This romhack was a treat to play. As somebody who sits in Showdown teambuilder without ever actually playing, being able to build a team without EV training, breeding for perfect IVs etc. was really great. It did feel a bit bad to dump all but my starter near the 7th gym though to build a rain team but otherwise I don't think I could have beaten the elite 4 (seriously, they are inpenitrable if you don't have a thought-out team).

Some fights are brutal but I wouldn't say any fight is "ridiculous". By the time some gym leaders / other significant characters use megas and legendaries, you have your own megas and legendaries. Legendaries are a bit scarce, but I understand that making areas for all of them would be very time-consuming.

Spoiler: Team suggestions for people struggling

For people struggling with the team aqua fight in Petalburg Woods, Intimidate Shinx/Luxio is great against Zubat and Carvanha, while also supporting against Poochyena. Shroomish is also good too.

If you struggle against a Primal Groudon, catch a Golduck, get Cloud Nine, and a strong water stab move (Surf or Hydro Pump preferrably.)

Unburden Sneasler with Swords Dance can rip apart teams, but any Pokemon that resists its stab probably can stop it. Also, it evolves by level-up whilst holding a Razor Claw, wild Sneasel on the same route you get Hisuian Sneasel can hold them so just DexNav to find one with it and catch it.)

Swampert is probably the best starter (biased I know) because Swift Swim Mega Swampert demolishes many teams with Rain support (and against opponents with Rain strats, they give you the support!)

Rocky Helmet Iron Barbs Ferrothorn can wall many physical attackers and do great chip as well as setting hazards very consistently.

The afformentionned Shinx/Luxio eventually fills a decent support role too, Intimidate + Baby-Doll Eyes with other tools like Thunder Wave and Light Screen almost guarantees any physical attacker to be weakenned.

Quests are a great distraction between badges and team aqua/magma stuff and locking certain mega-stones and competitive items behind the gym leader quests, whilst sounding annoying, makes fighting them very rewarding. (And, if you are struggling, beating some of these could help you a lot).

Definitely my favourite romhack in a long time, really polished and I never saw a single bug that actually impacted my experience.

P.S: The HOF screenshot got stretched and looks very nasty, unfortunately.

 

[Ninja Isabelle]

This romhack is a complete joke. The first gym has 6 pokemon, competitive movesets and viable items. And the player has access to NONE of those things. Things being difficult is fine, but you need to give the players the tools to overcome the difficulty. This just feels like you've never played a romhack or know how to balance anything. Nobody should play this when there are far better alternatives literally anywhere.

 

[Targaryen]

This romhack is a complete joke. The first gym has 6 pokemon, competitive movesets and viable items. And the player has access to NONE of those things. Things being difficult is fine, but you need to give the players the tools to overcome the difficulty. This just feels like you've never played a romhack or know how to balance anything. Nobody should play this when there are far better alternatives literally anywhere.

Maybe you should be more sensitive in your comments and not belittle the work of this rom. It was an incredible job by the creator with all the changes and new features he achieved.

You have the right opinion and you think this rom is too difficult for you and that is okay. It's definitely a Nuzlocke rom that wasn't made for everyone, just don't play it but avoid non-constructive criticism that doesn't help anyone 🤗

 

[hoopyfreud]

This romhack is a complete joke. The first gym has 6 pokemon, competitive movesets and viable items. And the player has access to NONE of those things. Things being difficult is fine, but you need to give the players the tools to overcome the difficulty. This just feels like you've never played a romhack or know how to balance anything. Nobody should play this when there are far better alternatives literally anywhere.

My brother there are like 12 pokemon between route 101 and Rustsurf tunnel that have a type advantage against Roxanne, plus more that have good tools against her. If you are attempting to Nuzlocke this ROM you may be in for a bad time, but if you are playing normally you should not be having this much trouble.

 

[Ragna239]

This romhack is a complete joke. The first gym has 6 pokemon, competitive movesets and viable items. And the player has access to NONE of those things. Things being difficult is fine, but you need to give the players the tools to overcome the difficulty. This just feels like you've never played a romhack or know how to balance anything. Nobody should play this when there are far better alternatives literally anywhere.

Skill issue be like

 

[BrandonXL]

I've made an account just to say thank you for the great experience this game has provided!

I'll admit I haven't played many rom hacks, so I don't have a lot to compare to, but I did enjoy playing on a familiar setting (emerald map) and meet and learn about the new pkmn that I've missed (anything released after nitendo ds pretty much). My trainer card shows that I've played for 240h but I guess that's because the emulator speeds up. I've been playing for a week, quite a few hours every day.

My favorite part so far was the extra trainers/quests, with most of them being references to something. I've been trying to complete everything to 100% before moving to the next part of the game. And since Lilycove trainer battle (won't say the name to avoid spoilers) I've been revisiting old areas to catch shinies! The only part so far that I've ignored is the quest that starts at Slateport tents.

The game was above average difficulty at start, but then you can adapt as a player so you feel it gets easier. To be fair, quite a few (if not all) elite trainers and gyms could be soloed by a single pkmn, either with power up abilities or with held items. Or you could just play around the types and build a strategic team. Sometimes it takes a few tries to figure it out, you notice that the enemy uses different abilities depending on your actions and honestly you can use that to your advantage. The Pokevial having only one charge in the early game just makes you run extra trips to pokecenters or spend a lot of money on revives and pots. I understand that the first option it's probably there to prolong the gameplay time, but the second option leads to a dead end.

Personally, I've had the patience to go the extra trips and never had to buy revives and pots. I even maxed out the money by only beating the elite trainers after getting luck incense and using luck incense literally on every random trainer popping up ever since. However, going back in old areas to catch shiny versions (which costs ultra balls or lesser versions) and trying out strats (which costs mega stones, abilitycapsules, tms and lvlup trainer) ended up having zero money and no trainers to fight anymore (since I'm stuck in the story line).

Currently I'm stuck to the double fight with team aqua and I've got to say it feels very one sided. I've been testing out so many strategies but nothing worked so far. The fact that you have to go all the way back to a town to swap teams then go again in the cave to fight and see if that works and then repeat because it didn't.. I've been stuck for 3 days and all that back and forth with no results is getting pretty taxing to a point that is no longer fun unfortunately. I want to explore the rest of the game but it doesn't seem realistic to beat 2x mega + 2x Zmoves fighting you alone at the same time (because you get partnered up with someone that is completely useless). It's frustrating because it doesn't feel that you can do something better to improve, while your other team member just dies instantly every turn. Beating a hard fight as a player feels rewarding because you overcome the difficulties, but this duo fight just makes me demotivated to keep going.

I'd love to experience the rest of the game, beat the E4, catch the remaining legendaries, even attempt to complete a shiny pokedex. But remember that you choose to play a game to have fun and when that fun is lost you are not playing a game anymore, you are just doing chores..

Nevertheless, the creator is truly talented and did an amazing job. No doubt it'll only get better as it seems that each version seems to adapt to previous issues and keeps improving. I'd love to see if this creativity will expand to more games as well!

First off, thanks for sharing your feedback! The game definitely has those moments where you might scratch your head. But knowing that you got that far, you are more than capable of clearing it. At times, it might require a little RNG, but if you do revisit things or want any suggestions based on your available mons, I'd be happy to talk more with you. There's more content to see, and I hope you get the chance to experience it, but to your point, fun is the most important thing. I encourage you and everyone to play a game for fun before anything :)

This romhack was a treat to play. As somebody who sits in Showdown teambuilder without ever actually playing, being able to build a team without EV training, breeding for perfect IVs etc. was really great. It did feel a bit bad to dump all but my starter near the 7th gym though to build a rain team but otherwise I don't think I could have beaten the elite 4 (seriously, they are inpenitrable if you don't have a thought-out team).

Some fights are brutal but I wouldn't say any fight is "ridiculous". By the time some gym leaders / other significant characters use megas and legendaries, you have your own megas and legendaries. Legendaries are a bit scarce, but I understand that making areas for all of them would be very time-consuming.

Spoiler: Team suggestions for people struggling

For people struggling with the team aqua fight in Petalburg Woods, Intimidate Shinx/Luxio is great against Zubat and Carvanha, while also supporting against Poochyena. Shroomish is also good too.

If you struggle against a Primal Groudon, catch a Golduck, get Cloud Nine, and a strong water stab move (Surf or Hydro Pump preferrably.)

Unburden Sneasler with Swords Dance can rip apart teams, but any Pokemon that resists its stab probably can stop it. Also, it evolves by level-up whilst holding a Razor Claw, wild Sneasel on the same route you get Hisuian Sneasel can hold them so just DexNav to find one with it and catch it.)

Swampert is probably the best starter (biased I know) because Swift Swim Mega Swampert demolishes many teams with Rain support (and against opponents with Rain strats, they give you the support!)

Rocky Helmet Iron Barbs Ferrothorn can wall many physical attackers and do great chip as well as setting hazards very consistently.

The afformentionned Shinx/Luxio eventually fills a decent support role too, Intimidate + Baby-Doll Eyes with other tools like Thunder Wave and Light Screen almost guarantees any physical attacker to be weakenned.

Quests are a great distraction between badges and team aqua/magma stuff and locking certain mega-stones and competitive items behind the gym leader quests, whilst sounding annoying, makes fighting them very rewarding. (And, if you are struggling, beating some of these could help you a lot).

Definitely my favourite romhack in a long time, really polished and I never saw a single bug that actually impacted my experience.

P.S: The HOF screenshot got stretched and looks very nasty, unfortunately.
View attachment 160301

These are absolutely wonderful tips that I think would benefit a lot of people; the Primal Groudon strategy is something I've personally never tried, but I think that's a testament to the ingenuity people can come up with with the abundance of available mons. I'm very happy you enjoyed the game; write-ups like these always brighten my mood. I was on a cruise with no access, so sorry for just now adding you to the Hall of Fame. Congrats on the clear as well as the first Politoed :) Screenshot looks mighty fine on the main post, where it'll stay forever haha

 

[Gus12345]

Difficult, but fair. On a scale of 1-10, with vanilla being a 1 and Radical Red being a 10, I would say this game sits at a 6.
For real?
Sitting for an hour at Roxanne, all levels maxed out bc of level cap, absolutely no chance. wtf is going on.

 

[hoopyfreud]

I'm very happy you enjoyed the game; write-ups like these always brighten my mood.

Well if it's write-ups you want, I've got one for you :P

This is my strat doc for the boss rush. Team is attached, but in text:

Spoiler: Team

Grimmsnarl @ Light Clay
Ability: Prankster
- Spirit Break
- Light Screen
- Reflect
- Fake Out

Kyogre-Primal @ Blue Orb
Ability: Primordial Sea
- Origin Pulse
- Ice Beam
- Thunder
- Protect

Aegislash @ Iron Ball
Ability: Stance Change
- Shadow Ball
- Gyro Ball
- King's Shield
- Sacred Sword

Landorus-Therian @ Leftovers
Ability: Intimidate
- Earthquake
- Knock Off
- U-turn
- Stealth Rock

Rayquaza-Mega @ Assault Vest
Ability: Delta Stream
- Draco Meteor
- Dragon Ascent
- Extreme Speed
- Earthquake

Ho-Oh @ Choice Band
Ability: Regenerator
- Sacred Fire
- Brave Bird
- Earthquake
- Whirlwind

And here are the strats per-split:

Spoiler: Kanto

Brock
Spirit Break, Reflect, swap to Ho-oh, Earthquake until die
Aegis for Cradily - Protect turn 1

Misty
Reflect turn 1, swap to Kyogre
Aegis for Starmie, die to Blastoise, swap to Snarl and Screen, Spirit break, Reflect (if live to Urshifu)
Ray kills Urshifu
Kyogre for toed

Surge
Break then Reflect, swap to Lando, kill, swap to Aegis on Electivire
Do literally anything, this is a free win

Erika
Fake out, Reflect, swap to Ho-oh, Brave Bird 3x, swap chain between Ho-oh and Aegis to heal
Sacred Fire 3x

Koga
Reflect, swap to Lando, Stealth Rock, Earthquake 3x
swap aegis on Nihil, gyro ball

Sabrina
Break, Screen, swap Ho-oh
Swap Lando on Victini, Earthquake 2x, Stealth Rock on Tapu
Swap Ho-oh on post-Tapu Victini

Blaine
Break, Screen, swap Ho-oh
Swap loop Lando Kyogre on Rotom (set up rocks and kill w/U-turn), swap Kyogre on last U-turn
Origin Pulse on Ho-oh

Blue
Break, Screen, swap Aegis, kill w/ Gyro Ball IMMEDIATELY
Swap Ray vs Groudon IMMEDIATELY (double min roll on Earthquake wipes here, but Stealth Rock and Fire Punch are both OK), Snarl vs Fish to null Outrage, Reflect, swap Ho-oh
Swap to Lando vs Zera
Swap Aegis vs Fish, Shield, swap Lando, die and swap Aegis, Shield, drop a few (less than 5) times, kill w/ray
Espeed Mewtwo, swap to Snarl, Fake Out and Screen, Break until die
Depending on hp, Kyogre thunder or pulse to kill. Thunder is 2-turn.

Spoiler: Johto

Falkner
Reflect, swap Ho-oh
Swap Lando on Kiss, Stealth Rock, U-Turn into Snarl Fake Out, swap to Lando, U-Turn into Kyogre Thunder
Swap Ray on Articuno, Dragon Ascent until win

Bugsy
Reflect, swap Ho-oh
Swap Aegis on Armaldo
Swap Ho-oh on Scolipede
Swap Kyogre on Golisopod
Ray outspeeds Pinsir, but let whoever die first

Whitney
Spirit Break, Screen, swap Ho-Oh
Swap Lando on Regigigas, sac to Lopunny
Ray to kill Lopunny and Meloetta, sac to Ursaluna
Kill Ursaluna with Kyogre (Ice Beam if damaged, Origin Pulse if not)

Morty
Spirit Break, Reflect, swap Lando, Stealth Rock, Earthquake Blaceph, Knock Off Necro, Knock Off Spec, Earthquake Gengar, U-Turn into Ho-oh

Chuck
Spirit Break, Reflect, swap Aegis. If yellow HP turn 1, swap Kyogre and swap back, otherwise just Shield
Swap Ho-oh on Conk
Swap Aegis on Viri, spam gyro ball
Swap Lando after Aegis dies

Jasmine
Spirit Break, Screen, swap Lando, Stealth Rock, kill
Swap Kyogre on Empoleon
Sweep

Pryce
Reflect, swap Kyogre, Pulse 2x
On Abomasnow, protect to prevent hail, then swap Ho-oh
Ray can kill damaged Spectrier, otherwise just spam him
Swap Ray on Kyurem

Claire
Reflect, swap Kyogre, swap Lando, Earthquake
Swap Kyogre on Kingdra, Thunder 2x
Swap Snarl on Drago, Spirit Break, Reflect, Spirit Break
Spirit Break Hax, swap Aegis, swap Ray, Espeed
If Kingdra died, Draco Meteor Zygarde, Espeed Salamence kill on Outrage-locked turns with Snarl

Spoiler: Hoenn

Roxanne
Reflect, Screen, swap Aegis, Gyro kills (if Diancie Diamond Storms and lives, need to go Ray for Espeed kill and then get back on track somehow - remember that Probo has speed berry, so Protect if no Rocks)
Swap Lando on Rampardos, Stealth Rock, U-Turn to Kyogre, slay
Rampardos is Scarf, so Aegis can manage him

Brawly
Fake Out, Spirit Break 2x, Reflect (get FO'ed and then go again)
Swap Lando on death, kill Sneasler
Swap Ray on Medi, sweep with Ascent

Wattson
Spirit Break, Screen, swap Lando, Earthquake 2x
U-Turn loop with Ho-oh on Rotom (works if Lando burned)
Ho-oh kills Electrode, throw the kitchen sink at Zapdos (Ray can Meteor it but not touch it)

Flannery
Reflect, swap Aegis, swap Kyogre, spam Pulse until Cinder and Moltres dead
Ho-oh, Ray and Lando kill everything else

Norman
Fake Out, Reflect, swap Lando, Stealth Rock, Knock Off
First Kanga is FAKE - Knock Off and kill with Ho-oh
Swap Aegis on Cinccino
Swap Ho-oh on Arceus

Winona
Fake Out Gyra, Thunder Gyra
Spirit Break Gyra, Protect
Spirit Break and Ice Beam Salamence
Swap Snarl for Ho-oh, Thunder Enamorous
Whirlwind Lugia, die on Kyogre get Snarl
Random cleanup

Tate and Liza
Swap Snarl for Lando, Protect
Stealth Rock, swap Kyogre for Ho-oh
Swap for Snarl, Brave Bird at Indeedee (Ho-oh should die)
Kyogre for Ho-oh, Spirit Break at Deoxys, Kyogre Protect
Snarl for Aegis, Kyogre Pulse
Cleanup - consider switching to Ray

Juan (HIGH VARIANCE - A CRIT PRETTY MUCH ANYWHERE KILLS THE RUN)
Note that this is a speed tie loss strat, where Kyogre gets knocked down to ~half by Juan's on turn 2. Fight gets a little better if this doesn't happen. This fight SUCKS for consistency.
Fake Out Kyogre, Thunder Kyogre
Reflect, Thunder Kyogre (full para here from us losing the speed tie is a wipe)
Snarl for Ray, Draco Meteor Palkia, Kyogre for Lando
Ray for Ho-oh, Lando for Aegis (U-Turn @ Swampert) loop
Finish loop when Swampert is almost dead, with swap Ray for Ho-oh and Lando for Kyogre
Brave Bird and Thunder into Tapu
Ho-oh into Lando, Thunder into Rotom
U-Turn and Thunder into Rotom
Brave Bird and Ice Beam into Swampert
Everything at Manaphy

Spoiler: Masters Eight

Diantha
Reflect, swap Kyogre, Thunder
Swap Ho-oh on Celebi, Sacred Fire 2x
Swap Snarl on Latias and slow kill with Spirit Break
Swap Kyogre on Enamorous and Thunder
Kyogre and Ray one-shot Floette

Steven
Reflect, swap Ho-oh
If you get flinch locked, swap Lando at some point and swap back, but Sacred Fire is a one-shot
On Staka, swap Aegis, then Lando, U-Turn back to Aegis, swap Lando, kill with Earthquake
Swap Kyogre on Solgaleo - it loves to Agility for unknown reasons
Swap Lando on Metagross if Kyogre is out and it's Thunderpunch locked, then swap Snarl, Fake Out, Reflect, sac, kill with Lando

Alder
Spirit Break, Screen, swap Aegis, Shadow Ball
Swap Lando on Melmetal, Earthquake 2x
Sac Lando to Kyurem, swap Ray, Draco Meteor, Dragon Ascent
Sac Ray to Yvetal, swap Ho-oh, spam Sacred Fire, if die swap Kyogre

Wes
Fake Out Incin, Origin Pulse
If Origin Pulse doesn't go off, fight gets a bit harder but it's OK - just Light Screen and Origin Pulse this turn
Ideally you end up vs Amoongus and Kyurem - focus down Amoongus first with Ho-oh and Kyogre (remember to Brave Bird only), then just... steer. Tornadus has Sash, but the back half of this fight is pretty free.

Cynthia
Spirit Break, Screen, Reflect, swap Lando, Stealth Rock, Earthquake
U-Turn into Aegis on Caly, Shield, swap Lando, do it again 2x
On Caly kill with U-Turn, swap Snarl, swap Ho-oh, swap Aegis, swap Lando, swap looop Lando and Aegis (DO NOT U-TURN) until Lando kill
U-Turn Zarude into Snarl, swap Ray, cleanup

Wallace
Fake Out Kyogre, Thunder Kyogre
Reflect, Thunder Kyogre
If you win this speed tie, fight is easy. Otherwise, things get hard...
Swap Snarl for Ray, Draco Meteor Palkia, swap Kyogre for Lando
Now everything goes to hell. Heavy improv will be required due to all the inaccurate moves and lack of ways to bait the AI. The following is a skeleton of one of the more narrow paths to victory, if Ray dies next turn. Otherwise, improvise.
Dragon Ascent Keldeo, U-Turn Keldeo
U-Turn into Kyogre, resend Lando
Sac Lando, Thunder Gyrados
Swap Lando for Aegis, Sword Gyrados, Protect Kyogre
Shield Aeigs, swap Kyogre for Ho-oh.
Arceus kills Ho-oh ~1/4 of the time, then you lose if you lost the speed tie. Sacred Fire Poliwrath and Shadow Ball Arceus.
Things to note: Sacred Sword will be SE on Gyrados. Shadow Ball is Aegis' best move. Remember to double protect to swap Aegis formes. Ray will always bait ice moves, so if he freezes, keep him in and let him die.

Lance
Spirit Break, Light Screen, swap Lando, Stealth Rock, Earthquake
U-Turn to Kyogre on Gyra, kill with Thunder, Protect
Aegis-Lando loop. Can start U-Turns after a couple Intimidates. End loop by going Ray and killing with Espeed when stats are dropped a few times and HP is ~50%.
Draco Meteor kills Dragonite, go Snarl to null Dragon Darts, swap Ho-oh to kill Dragapult eventually either way.
Sac Ho-oh to Eternatus, swap Aegis. 3-way loop Aegis-Kyogre-Snarl to exhaust Dynamax Cannon (Dragon), then 2-way swap between Kyogre and Aegis to exhaust Sludge Bomb. Kill with Kyogre when it's done.

Leon
Reflect, swap Ho-oh, Sacred Fire
Swap Lando on Lando, Stealth Rock, Knock Off, U-Turn into Kyogre
Ice Beam, swap Lando on Regileki
Swap Kyogre on Greninja
Swap Snarl on Calyrex and 1v1

I planned out these strats using save-states due to the lack of trainer data, but these strats are usable enough that I was able to get a no-save clear.