Playing the first level right now
Game is a beat-em-up, third person
You can do co-op, up to 4 players, offline
Single player, you can switch between the four by hitting D-Pad, the other 3 are AI controlled
Break stuff and beat up people to get coins, used to upgrade stats
Got 20 points for doing a "fusion move" which was like LT + B, lol.
Hopefully the two collectable achievements arent hard to find.