Its a bit rough around the edges, the terrain is hard to navigate and this one comes to preference but I like faster sensitivities that what the game had. You're able to double spin the wheel as well which breaks the wave system. I think if you want to update this project after the jam, then you should remove the ammo reward and only give the full health reward if you're injured, I thought the rewards were really lackluster until I started getting lucky on a 4th run. and got things like double damage.
That all being said it's still not bad, I can see the potential that would come from a bit of polish and more time given to you, the system you're using allows multiple guns so maybe even feature unlockable guns through spins, and with a real level or two and I could totally see a really good end project here.