for level 40, PRACTICE YOUR DAMN FINGERS. time your jump, careful how you fall down. try not to bump into things. don't press your arrow keys too hard, with the momentum and all. avoid bumping onto any wall. try to slide down those stair steps. you should pretty much jump and run in a rhythm and consistent pace. GOOD LUCK.
I think my chief problem is you put too many speed and timing required levels in a row. If i can play at least some puzzles in between, I would be glad to skip the speed ones
between 45 and 60, maybe there should be a defensive skill.. for mage, the last one is like Shield at skill level 12, and it does not says if it ever wears off.... A clear and concise description would be useful