Oh my, This game is so good. The boss fight felt engaging and really tested the skills you learned on the way there. Its punishing to mess up but not so bad that you cant win from that point forward. The final boss kept me playing for at least 10 minutes which I would say is a game jam success. My only criticism is that things can go offscreen. I would love to see more enemies and maybe a map and story, but those aren't things viable in a game jam. Mechanics are clean and satisfying 10/10