The game is visually coherent together and pleasant to the eye. Some FXs are pretty cool. Noice job !
Gameplay wise, it's easy enough to play with a gamepad. Some explanations would have been nice at the start to learn the double charged jump. Clues would have been nice to find the items as well. Also, don't allow to die from going out of bounds if you plan on making holes and having the player faith leaping from a high place. It happened to me when I had both keys, and jumped right into the void, passing between all the platforms, and it felt pretty frustrating.
Overall, it's a solid entry, sound design is present and felt great with the theme. Congratulations !