The staircase defeated me.
I really liked the idea of having to find the bosses' weak spots, as well as the concept of the tower itself. However, I think there should be some restriction on skipping bosses and running straight to the next floor. It might also help to add attack animations, as I wasn’t sure if I was even hitting anything until I finally defeated the first boss. The lack of sound is also noticeable, but that’s just a matter of development time.
I hope you don’t abandon this project after the jam and continue to develop your idea because it has great potential!
As for the staircase incident — it happened on the floor with the dirt golem. I tried to go back down to the previous floor, but the golem stood right in front of the stairs. Because of the hand’s collision, I couldn’t climb back up. Again, this could be fixed by restricting movement between floors during boss fights.