57e47233_and_Secrets_for_3DS___GameFAQs__How_to_Unlock
[Unlockable] This Is Madness! [How to Unlock] 
Fighting is fun, huh? Well then, let's aim for 300 matches against another player, OK buddy?
Super Street Fighter IV: 3D Edition Cheats, Codes, and Secrets for 3DS - GameFAQs