Thanks for the feedback! Yeah it does get pretty repetitive after a certain point, I didn't really give myself any time to plan much of the game out before starting to mess around and it really suffers from that lol. I'm glad you had some fun with it tho!
As for your game, I found it really fun to play! The music is great, the art is nice, simple and really strengthened by the effects. Most of the weapons felt pretty good to use with the notable exception of the melee weapons which I couldn't really figure out, and I will say that the AK ended up being the main thing I used since I could just hold it down. I feel like the enemies were pretty fun to maneuver around and the boss did feel a bit like it was just a normal enemy with a lot more health and not much more going on (I also experienced a bug where after firing at the boss for a few seconds it would teleport away and never teleporting back), maybe it could send out some projectiles or summon some other enemies to make things a bit more interesting for that part. The movement in the game feels great too, especially once you've gotten an upgrade or two in. Overall you did a great job! Hope to play another one of your games some time soon