I feel the graphics could be so much better with a color scheme.
I like the gameplay, the enemies feel kinda fun to fight.
The sound effects are too high pitch imo and they kinda hurt your ears, if you listen to them for too long.
Your take on the theme is pretty interesting, although the UI doesn't really explain to me how it all works and I had to read your page description.
The controls were pretty intuitive and I like that you don't have to click every time you wanna shoot and can just hold down the button.
Cool game :)