Clever use of the theme,and nice a mix of puzzle and shmup gameplay.
The music is really awesome and it keeps the tension up even during the puzzle segments cause you know you risk big if you choose the wrong chest :p
I don’t know if you implemented other consequences chosen randomly or if there’s only one, but i feel the inverted controls may make the game a bit too hard if you fail a puzzle.
Other than that it was a fun ride. Well done :)