save the gnomes It wasnt bad..
I liked the music but there are a few problems in your gameplay such as:
1. Jumping - If you dont reach the maximum jump length you can do double/triple/quadruple jumps until you reach its maximum.
2. Platforms - The main problem is the moving platform, you need to make it so he moves with it or you end up staying where you are then falling, move the platform using Actionscript so then you can make the guy go with it using "this._x += platformspeed" when the guy is touching the platform, or something along those lines.
Also.. what was going on with that platform in level 3?
3. Levels - They got quite boring after a while, and were pretty easy, you could have put more enemies in or made the guy not jump as high so you could put more platforms in which would make it more challenging rather than just 2 platforms and then the end.
It wasnt too bad though, take your criticism into account for your next game and improve on the weak points of this game.
