This is good shit. I must indeed testify that the flamethrower balls are unfair, but the rest of what I've seen is top notch, from the graphics to the mechanics to the gameplay itself, not to mention all the references to other games. I feel that burst needs an indicator that it's ready, a simple beep will probably do. Other than that, great!
Bug report: You can let go of the laser, have it shrink a bit, and then hold it again. The shrinked laser will be fired now, and it deals more damage the smaller it is. It's enough to cheese bosses stupidly fast.
PS: The music is great, I hope there will be a way to download or even buy it.