Looks pretty cool for 5 bucks. Tried the demo. Just curious if the full game allows use of a controller. Keyboard is a pain even though the controls seem pretty simple.
It's a flash game, so I don't think (but I could be wrong) it natively support a gamepad. But if it doesn't you can use something Xpadder or Joy2Key to map keyboard commands to your gamepad.
It was on sale on Steam the other day - if you didn't, you should have picked it up then. Though it's more than worth the normal price of $5.