sorry to see that in spite of good controls and decent collision detection, this game has 2.30 stars. Yeah, the graphics could have had more effort, but the rotating head on his idle cycle is really a nice touch.
A good sense of height and danger is also established, because you know you'll fall either back to the beginning or death. X_X
One thing that was sort of tacky was the painted "thanks for playing" at the end of the stage. Would have preferred a different screen altogether. Also, his jumping is a bit...jumpy, not sure what you need to fix there.
Also, a consistent interface goes a long way, even on the simple stuff like not having to click start, but rather using the keyboard...since that's what controls the rest of the game.
out of 10...
gfx - 6 (decent, but more effort could have been used)
sfx - 7 (good song choice, sfx would have been nice tho)
design - 7.5 (thoughtful planning, but perhaps poor interface)
gameplay - 8 (quite fun, despite the length)
overall, this is a decent effort and I am glad to have played it. Good luck on future submissions!