Well that was short, but fun ^^
The visuals looked neat and the music fit well.
You should consider displaying the controls somewhere, even just on your itch page (it took me a little while to understand I had to use the mouse to shoot)
The collissions felt a bit weird some walls were solid others I could go through.
if you want to push the game a little further maybe try to make it possible to aim with your mouse. :)
Not much more to say. It's a game, it's finished & it's playable. so, well done :)