Wow, this one was a real gem. Great work on the mechanics, and especially great work on the story. Simply awesome! The game had a nice feel to it, and even if the game was designed to make me ragequit, it kept me immersed.
The only thing I would consider adjusting is the camera. With the camera always centered on the player, it can get disorienting during the fast-paced platforming. I'd recommend adding a bit of a dead zone (maybe with cinemachine) to ground it a bit.
But still, I'm very impressed by this game. Great narrative, progression and overall experience!