The game gets stale after a while and there is a game ending glitch in level 20 where, once you fall into that pit with the little green circle sitting there, you cannot get out. What you should do is add a suicide button or something for people who fall in there so they don't have to reset the entire game just to retry that one level. Better yet, add a ledge that you can jump on to get out of there!
The game controls pretty slowly and it's annoying having to move that blob around while you're trying to do wall jumps and shit. It's a good concept and I like the paper graphics but I feel like you could have added a little more to it.