Pretty crap.
There's not really much to review here, so I'll just point out the flaws:
First of all, I am so god damn sick of techno in every flash game ever. Especially god awful techno.
The controls are pretty bad. You never actually did overshoot any of the platforms, but you always felt like you were about to, because the controls are just unwieldy and too slippery, making them unenjoyable to use. The rocks often hit you from off-screen. The game also has an annoying tendency to lag, though since my computer's pretty slow I can't really complain.
There are no other redeeming qualities, the game isn't original, good looking, it has no interesting gameplay mechanics... it's an unoriginal and uninteresting game, and a flawed one at that.
On the flip side, thank you for including a way to both mute the sound and play with the quality. Just... thank you.