Looks like Insomniac's Overstrike/Fuse but with the Turtles instead. Could be... alright. Could go either way.
Enemy A.I. looks shoddy though. When Michelangelo sneaks up on the first enemy, he turned around, saw him coming, then turned back like nothing happened.
Plus, the combat looks a little sluggish (but has variety). And the comic book cutscenes seem lifeless and a little cheap.
But still, looks like it could be fun (I hope).