I really love the art and graphics. It was enjoyable and the puzzles felt balanced when it came to difficultly.
That said, it feels like its missing that one thing to make it top notch. I don't have good feedback on what that is (sorry), maybe its something like you mentioned on my game about limiting the amount rewinds or something of that nature.
Despite that, I think you guys were able to make a really good game, and it was very cool looking.