I really liked this, probably because I managed to get so far. I think I got like three of the five medals on my first try! I was admittedly expecting something with more detail, but this is still really good. The way the heads and stuff are animated is very well done. It's just great to see all these crazy looking guys. It's one of the most fun games of these kinds I've played in awhile.
Granted, I haven't played that many at all, really. It certainly motivates you to continue playing. At first, I thought it was the same design, but that would of course been too easy. You should make platformer game with these guys. It seems like you could really expand yourself. It's still great for what it is.