Its OK...
Honestly, this concept is very nice, but it could be a lot better, and you have a nice base to work with.
First off, the spikes, and for that matter, the mute button aren't the easiest to see, maybe changing the colors would help a little bit.
Also, I noticed that each spike-strip is composed of 4 spikes, which occasionally led to spikes hanging over platforms, that somewhat interfered with the jumping ability, and it caused a lot of deaths, for me at least.
And on the note of jumping, the rotation that occurred during a jump was not really eye-candy, it in fact proved to be a distraction, whether or not this was intentional, I suggest changing it.
Another note on the jumping, the jumps were not very well spaced, because they would more often than not result in my character hitting a spike-strip.
And the last little thing, the character really had no graphics at all, he/she is a square, and being as wide as it is, presents a bit of an issue during jumping.
All in all, this game is a really cool concept, but it still needs fixing, best of luck if you decide to fix this up.
- Sage