Unless your a die-hard TMNT fan go download WORMS or Castlevania :SOTN
About the only thing that didnt put me to sleep is the online CO-OP which is acually not that bad, with limited lives and decent amount size of baddies to beat up it makes for a good challenge to see it through till the end. The online CO-OP and challenging acheivments they have is about the only thing your getting with this game.
My final word of advice is please download WORMS or Castlevania