I really like the art style and the music meshed well with the atmosphere. I think the most important piece of criticism I can offer is that you should increase the damage you take before dying. I think 3 hits should be the minimum. This gives the player some time in figuring out their strat. Also, the ghosts continuously following makes this even worse. If you didn't know you can use a VisibilityNotifier2D to pause their behavior once they are out of the viewport, which would work well with your game and how the rooms are designed.
Congrats on submitting!