I HATE the ultra-slow speed...
Collision detection is disgusting, the sound effects are horrid... wow, there's a lot to hate about this game.
So let's look at the good points. The music is ok, as are the graphics and animation. Good work there, but really you have to to fix the collision and speed... I hated jumping, "hitting" a ceiling, and then falling back to where I was a minute and a half ago... and then have to go in super slow motion to get to it again. That made me sad.