Hi Copacal!
I appreciate your words, they are uselful and motivating for me.
This is my first game jam and second game. As you told, it is a base and there are some ideas to work on.
For now, we have 9 rooms. When you finish a room the enemy get a little faster. Winning or losing we are moving to the next room because I felt it was boring restart always to the same sequence.
Even so, could you share a bit more what do you think about the interactions and the levels progress?
Thanks again!