Nice game, was happy to finish it. I think the visuals were very nice, along with the SFX they conveyed a really satisfying feel. I especially liked the effects for dying, and the screen fade.
I have a couple of feedbacks:
-It feels like the CTRL has to be used to perform any kind of platforming. There is not a strategic element to choosing when to spend your energy or when to rest, so I feel like it should be just the default movement.
-The key binding is a bit awkward to hold, it could be instead a key that is easily pressed by your second hand. It's also good practice to give the option for the player to also move with the arrow keys if they are not otherwise used.
Keep up the good work!