I've checked the modules requirements on wiki, and I'll have to disagree at some points. I'm not ambitious enough (yet) to finish the songs on Hard with excellent, so I was quite surprised, that all the special outfits were there for me to purchase. So far I've finished all songs on normal (excellent) and on hard (standard and a few greats). The ones I'm not showing here I've already purchased. My results are as follows: Easy: Didn't even touched Normal: All Excellent Hard: S,S,S,S,G,G,S,G,G,S,S,E,S,S,G,G,S,S,S,S,S,S,S,S,G,S,S,S,G,S,S,S Extreme: Same as Easy I hope it'll help you guys ;)
there are indeed some things incorrect on the wiki at the moment because we're not sure what exactly are the requirements for 100%. i also unlocked the append modules about 10 songs AFTER i reached 110 songs. also i unlocked some modules on EASY instead of NORMAL. edit: changed a few things on the page.