Polished. I like it.
I don't know where you got these sprites from. They're smooth and that makes your game stand out. I hold back on a perfect score because there are some things I'd like to see - just a larger play area to start, a few more powerups or at least tweaks to what's there. The ammo is so limited I kind of prefer just being allowed to haphazardly spray with my machinegun. Also, dodging didn't work out well for me. Enemies still seem to track your position and way too often you'll get shot instantly as you come out of the dodge animation.