Hey, Wolfatbar!
Welcome to PC!
I love to read stories about people who become fans at an older age! They're always nice to hear. :p I'm glad you're now technically hooked! The entire Pokémon series is great! Apart from playing player-made ROM hacked versions of the games, you should definitely try out the other main handheld games that you haven't played yet. :p
I'm not much help when it comes to assisting you with the issue you're having with your walkthrough of Pokémon Ultimate End. :[ Apparently, from what I read from this
thread created by the game's original scripter/author (which is locked now), the game is completed and can be played all the way through. Other than the information found in that thread, no one can really help you much unless they have played the hack before and know what to do. Also, seeing as it is a hack, there isn't
too much information out on it. Oh, and if you have any questions concerning anything surrounding ROM hacks, the
emulation forum is definitely the place to ask them in, although I'm not sure if there's a thread set up in there to ask questions about a specific hack. Usually, if a person has a question about a hack they're playing, they'll ask the question in the specific thread made for that hack, but this specific ROM hack you're playing is quite old and doesn't have an active thread anymore, so I'm not entirely sure if you'll be able to find help apart from anyone you may stumble upon who can assist you from experience. Sorry about that. :\
Anyways, I hope you enjoy your stay here! If you ever have any questions or would just like to chat, don't hesitate to leave a visitor's message on my profile!
See you around! :)