That's an awesome use of the theme. I like how the fewer bullets you get, the more powerful they are. The game is still quite a bit rough around the edges however... The hitboxes and the physics are really off, but that's normal in a short time jam like this. I don't like that the enemies keep killing themselves. I believe a safer way of dealing with the lack of bullets would be a very underpowered melee attack or something like this. I also believe that the camera should be further from the character so you could see more of the stage. This way it would be more neat to aim your shots and ricochet them. Still, overall pretty amazing game! Congrats!