Thanks for playing!
The difficulty in this game is pretty wonky. I balanced it to be beatable with any of the movement modes in normal difficulty (in case people wanted to play the game with normal bullet hell controls), but since you can move ridiculously fast in mouse move mode, it tends to make the game really easy on any difficulty.
Anyway, I'm glad you had a good experience! In retrospect, "rhythm-based" probably would have been a better descriptor than "turn-based..."