Updating score: holding space-bar lagged me. Didn't understand i was supposed to just click it.
Still think it's too hard at levels 10+
I can't fire fast enough to kill everything without getting really hurt. Even with the laser and turret.
So I found a lil glitch :)
If you have ur arrow buttons (ASDF) held down and you click off screen (say your AIM chat window) the arrows keep shooting XD - even when you come back to the game :D