The art is pretty simple but it works well enough here. The game itself is a lot of fun though, gameplay is pretty tight :D dough I'm not sure if I should be able to stick to walls if I jump against them and keep holding the jump button. Also it's a little bit annoying that the gun is so far away from my body, that I can't hit enemies that are too close to me. The music sets a great mood and really ties everything together! Just starting the game and hearing the music I immediately knew it's gonna be fast and fun :)

I do wonder, did you make that music yourself or is that 3rd party? I' giving you 4/5 for the sound design cause it's really good and the guns feel good too, but it'd be 5/5 if you actually made that soundtrack as well :D