Dubbed the Challenge System, this feature opens a series of achievements for players to tackle. Successfully completed challenges earn money and tickets, and span the entire game world. The best rewards, of course, are new heroes that are exclusive to this system, so if you want any of them, you're going to have to step up and knock out these challenges.
The new heroes coming as Challenge System rewards include Colossus, Daredevil, Firestar, Future Foundation Spider-Man, and Sentry.
[Source: Gazillion press release]