This was also really good. The beat'em up gameplay worked rather well and was fun. The crossover felt smaller in scale then in the previous game, but I think it helps build interest in what's going on and makes you wonder what will happen next.
My biggest problem is the final chapter, which when I first played suffered from extreme lag. Not to mention too many enemies showed up on screen one after another, and it started to get tiring after a while. Also, the first part in the fight against Shredder (Where Shadow uses a mech to attack Shredder's helicopter) kind of went on a little longer then it should, but otherwise, it was a really good final boss fight.
Good luck with the next episode.