Nice minimal pixel art game. the visuals and the sfx were well utilized and overall the game is very clean. I love the intro slates and the idea of using a cartridge. I'm a sucker for that nostalgia. And on that note I liked the galaga/space invader vibes too. The menus were very clean as well. My favorite thing was that you immediately gave the player the freedom to have a right and left arm load out selection (something I wanted for our game but couldn't implement with our time constraints)! I found myself running into enemies to die just to try them all out haha.
I think that also brings me to my biggest critique too: the weapons didn't feel different enough and there were was a very clear meta. Gatling all the way. The plasma and cannon felt pretty much exactly the same but I was expecting the shots to at least go through multiple enemies. The shot gun had no spread so felt pretty similar to the rifle.
All in all pretty cool and didn't come across any bugs or anything like that which is something to be proud of in a jam for sure! I could see this being a minigame inside another game. Nice stuff here!