The idea is this: Remember Game of Death?
Well, Bruce Lee's original vision for that film before dieing of Aspirin allergies (yes, that's his cause of death) was a cavalcade of battles
That's the idea of this mode
It takes place in a tower and in each floor and room there's hordes of enemies and a boss to beat in order to advance to the next floor
Winner will get either coins, trophies or a bunch of random special abilities for the characters