Poor little Luvdisc. He couldn't do much damage, so I got off 6 Howls (I needed one Hyper Potion.)
The rest of the battle was full of Earthquakes and Hyper Beams.
Edit: Entered Victory Road, looking for another Loudred to add to my team. I needed one to be a Special Sweeper. First one I find? Modest Nature. Aw yea. Currently, I'm getting enough coins for some TMs/evolving Audio 2.
Edit2: Finished Challenge. Here's all the E4 pics and team moves:
Team:
General strategy for E4: Sydney, Phoebe, Glacia: For the most part, it involved 3 Swords Dances and either a BB or Dig. Led Filler for Sydney so I didn't start with lowered Attack. Also needed some Hyper Potions to set up the combo.
Drake: Lots of Ice Beams and healing from Audio 2
Steven: Audio 2 and Dagger pretty much killed everything but Metagross, who, since both of my main Pokemon were almost already dead, killed both of them. Thanks to a lucky miss from Meteor Mash, Audio 1 was able to kill him with EQ.
MVPs
Beginning: Jet
Wattson-Victory Road: Audio 1
E4: Audio 2 & Dagger co-mvp
Funny story now, I'm already 6 badges into the Sinnoh leg! This shouldn't be too bad.
Team: Brobeaver (Bibarel): Around lv. 40: Rollout, Surf, Hyper Fang, ???
Falconbro (Staraptor): Around lv. 45: Aerial Ace, Fly, Quick Attack, Close Combat
also got Brogepi the Togepi (completely useless), Turtwig the HM slave, Starly the HM slave, and Psyduck the HM slave
Edit3: So, for every UMC that I do, I've determined I'm going to do it in the following format:
Start gen 2 and start gen 4 at the same time. Gen 4 will be on my ds, and gens 2 and 3 will be on an emulator. By the time I finish Gen 3, I will usually be around the 6th gym on Gen 4, giving me just two gyms to complete the challenge.