Not too bad...
but the controls and repsonsiveness of the game coukd use some work. Possibly work with the variable seetings for your gravity. When you walk, its fairly choppy, trying making the ground-base smother... I mostly jumped my way through because he was just to slow and choppy walking.
Overall, fairly good game... the bg music got annoying after a while, and the gaphics were average, but it was a fun way to kill a few minutes.