Good game, bad controlls
I have to say, the game is great. However it suffers from bad controls that a lot of people making flashes seem to fail upon... Basically you usually have the movement keys as wasd.
The bad controls are apparent the moment you get to stage two, and it is just going to be very awkward for anyone that is not left handed. Us right handed people want to be performing actions with the right hand, and movement with the left, and when you throw a stage like that at us, it's just not cool.
Please, allow an option to change the controls, because it's the right thing to do. Most PC games are used to WASD as movement anyway, so yeah, kinda backwards there.
It's really not hard to add an option in your flash to change the controls. If you did this one thing, then the flash would be flawless. But man is it a serious flaw. Remember, the world is not left handed. So don't be selfish.