Decent.
Appropriate style and SFX.
Running was a little bit slow, and made precise long distance jumps farily hard. I understand the idea, but starting over every death makes the game less and less interesting to play each time, considering the fact that you don't know what to expect out of new enemies/platforms you encounter, and what sometimes looks like a clean kill jump ends up killing you instead. You sort of ensure that people lose interest quickly. I know I did.