Promise... but a miss.
While this game has promise as a run-of-the-mill platformer, as of the time that I played it, it was so riddled with glitches that it really took away much of the fun. If glitches were part of the intention behind the game, this would get a higher score.
I didn't play with the music on, so I can't say anything about that. The sound effects are pretty standard though. Nothing special but nothing worth hitting mute over.
The controls are pretty basic. My only real complaint about them is that when you crouch, you have to press down and then down again to stand up. That's so deeply against gamers' natural reflexes that it caused many, many deaths for me. A game shouldn't be about fighting with the author's choice of controls.
With some serious debugging and attention from a programmer, this could be worth a 10. However, right now, I just can't see myself finishing it.