Congratulations on your first game!
If you want to work on the game further, I’d suggest looking at the difficulty and feedback (or “juice”).
For difficulty, I’d lower the enemy health and make the first levels bigger. Otherwise it’s too easy to fall off while running away from enemies, and the enemies take quite a while to kill. Balancing a game takes a lot of time which you don’t really have in a jam, so it might make sense to incline towards making the game easy.
For feedback, since this is a shooter, the most important part is, well, shooting. A damage flash would go a long way to show whether the enemy has been hit - otherwise it’s hard to understand whether I have missed. An indication of receiving damage would also help.
Making a working game (I wouldn’t call it “extremely broken”) in just two days is very hard, so great job!