Exceptional game. The difficulty ramps up slowly, but there are many levels, which get significantly more difficult. What some people don't seem to realize is that there are two courses you can take on each level: get all the stars, or beat the time - You don't have to do them in the same run to achieve these goals. Space bar skips just about anything you don't want to wait for. If you f-ed up, hit ESC and retry. Arrow keys are your friends.
Congratulations on a well made action/puzzle game.