Hmmm, I see that you can pick up things that are supposed to upgrade your weapon, but, nothing seemed to be happening? Perhaps I didn't play long enough, but, some sort of indicator to what is going on would help a good deal, there was also some weird stuff with the player controls where the player kept resetting to look down even when moving at times, made it more difficult than it should be to shoot at enemies.
Seems like there was an interesting idea here somewhere that just didn't quite manage to make it out, but, still bravo on working through the game jam 48hrs is very little time to make something, and anything one achieves is an accomplishment!