had a go, controls seem unstable, i get it the idea, maybe im missing something, but i found it unplayable. everytime i click the mouse it just kept starting a new level until the wizard appeared. :)

Interesting gameplay mechanic. The slider controlling my character's jump and move power seems counter-intuitive though. I had no luck adapting to it. I think it may make for better gameplay if the character's speed/jump power remained constant, but the obstacles varied in height and width according to a sine function instead. As in, have the pits get wider or narrower instead of the jump power getting stronger or weaker, have the logs move up and down according to a sine function. The concept remains the same, but this would allow players to visualize the timing and challenge more intuitively I think.

Nice work!