I really enjoyed your game! Challenging and addictive. While I didn't love the music, I think it suits the game very well. Graphics are very well done, and the whole thing is very convincing.
Maybe the gameplay could be explored deeper? Maybe play more with the geometry (more pool/puzzle, less action?). But that might just be personal preference.
Occasionally enemy shots seemed to go through walls? Not 100%, was too busy dodging and shooting. Also, the angle was sometimes hard to gauge, maybe that could also be polished a bit.
But overall, great game!