Best TMNT since Turtles in Time
I have been playing this since it was released on XBLA with my kids all day and I must say so far it is very good. Worth the $15 already.
The good:
Old school feel
Graphics are pretty good considering previous TMNT installments
4 Player couch co-op in the built in arcade minigame
2 Player co-op offline campaign
Good story
Great music!
Fluid movement/fighting
Fun for all ages
The bad:
Wonky camera angles and unnecessary zoom-ins
Navigation is story mode is almost non-existant (overly luminescent lighting that is sometimes hidden, and glowing objects to climb/jump that only glow when you are close)
Should have had 4 player offline story mode :P (but thank you for the 4 player arcade mode!)
Voice acting (only Leonardo sounds close to what he should)
I have in fact had 9.0 - 10 for fun, which is what games are about.