Thank you for reviewing my game, I have come to your submission to return the favor.
It's nice to see a Game Maker entry. The game play feels excellent. It really does. I did find it difficult to jump over some spiked because of the low ceiling. The concept that you can fight the boss at any time but you must explore to get yourself ready is really good use of the jam theme. I dig the music and art too.
I see this is your first itch upload, so good job. Keep up the good work.