Lots to love here. I think the visual style is nice and consistent, Never distracting from gameplay too much. I think the difficulty is just a bit too high. If the gravity value was tweeked, that might help.
Conceptually, it's very strong! I think you really embraced the theme, and it totally works. I dont need platforms where I'm going XD. I do think that health is a bit redundant. This has a very "Celeste" or "Meatboy"-esque feel, and i'd lean into the one hit Kill option when it comes to level design and mechanics.
Keep making games!