You got some extremely smooth movement controls, which makes moving around alone pretty fun. The sound effects on the enemies are pretty quirky and gave the game a lot of character.
The movement's imprecision lends itself to making the game somewhat difficult actually, but at the same time there isn't too much danger of losing health and dying. The combination of hard to aim (probably a ton better on mouse, I'm on trackpad, but the sliding movement remains the same) and not much danger of being hit means the levels can take a pretty long time. And on top of that, the enemies don't die in a single shot. I think giving the enemies less health and/or making aiming easier (maybe a full laser beam while aiming and not just an arrow) would make the game less drawn-out.
Well done with music, the sound effects, and the smooth movement. Great job!