That's very well done and polished, but could be more forgivable with physics. I got stucked on the third level I guess. Couldn't make the jump after MANY tries. Good job!
The third level has a trick, and you have to think about it a bit, I dont wanna spoil the whole thing, but, after you make the first jump, you still have two keys left, right?
Think about how you can use both, to gain more speed towards the right ;)
