Hey thank you for your feedback, I completely agree with you!
I kinda shot myself in the leg with spending way too many hours on the level generation and not having time to implement proper enemies, sounds, art and the boss.
I was also planning on adding things such as a tutorial, but I didnt have the time sadly.
I think that i'll improve the game after the jam is over and I'll adress each of your points.
Thanks for playing my game.