A shooter for a game jam is pretty impressive! I like the theme surrounding this game. All the different computer parts look really cool as an arena. I liked the boss fight and having to destroy different parts to win with the different ammo types. Movement also works really well for this in being able to sprint multi-directionally.
I do wish the ammo types were a bit more than rapid firing into an enemy, then switching and repeating. Using the 0 and 1 for on and off is a cool idea that I'd love to be expanded on aside from only the levers! I think the swap being the ammo types would feel better if it wrapped around (pressing "e" swaps between the two rather than only switches to one type). It might just be better to have all the swap buttons just switch the type to the other one since there are only two after all. The volume slider doesn't really function properly (turns to dead silence way too soon). I think it just needs a specific multiplication added to the code for the slider (I don't remember it off the top of my head).
Great job, good luck on your post-jam version!