I'm surprised it's not listed here, but I have a challenge for BW. The Gen V games had (until patches were introduced) and anti-piracy that prevented the player from getting exp on a downloaded ROM. Thus, my challenge was this: No Experience at all. That means no exp from battles (use a ROM or an AR code), no daycare, no Rare Candies and no dupes. It's a challenge that flucuates in difficulty. I have videos for all 8 Gym Leaders (with subtitles explaining where I got certain Pokémon from, extra info, tactics, etc.) in this challenge. I'll be uploading the Elite 4 and end of game soon (it's possible, I've finished it but the last battle was 30 minutes long). Anyone want to combine this with another challenge?