Congrats on your first game jam! The fact that you finished and submitted a game is impressive in itself.
Pros:
- The interface works well
- There aren't any game breaking bugs
In terms of improvements, I think a small few changes would go a long way. Adding a SFX will GREATLY improve the feel of your game. I found that I thought I would have to jump up on the crates or avoid obstacles on the ceiling, but they were passthrough. You could utilise that. The enemy hitbox should be a little bigger too, it was a bit infuriating.
Overall, I like the idea and it is very well done for your first game.