Not too bad
This was a pretty entertaining game, and I enjoyed it. The animations are cute, the gameplay is decent, and it's got some challenge without being arbitrarily unfair.
I should probably mention that there's a problem with the level code's display after you beat a stage, though; it seems for any stage after the first one you beat, the level code gets 'replaced' with the first one you're given; IE: If you beat levels one and two, you'll still see two's code when you should be seeing level three's.
All-in-all a good game, though.