Nice job fitting the game to the jam theme!
I had to play it a few times, but eventually beat the boss, so it's not too easy, and it's winnable. That's great!
> All feedback is welcome!
- The only mechanical thing I'd change is increasing the friction on the character. The controls feel floaty.
- You say you're just starting with Unity, so you've probably got a lot of things to learn. One thing that can get lost among all the other topics is "game feel" or "juice". Particles, squishing and squashing, screen shake. They can really take a simple game over the top: