It's a nice game. I agree with the other commenters, the controls make it a little hard to handle. I see that you were focused on making a narrative game.
I would reccomend for next time that if you want to make a narrative-heavy game that you center your efforts on it. Making a platformer is a hard thing on its own, I would also reccomend that for a jam you took one or two mechanics instead of adding so many elements: enemies, spikes, springboards, wall jumping. It sets up a lot of work for you and makes it really hard. It's always good to try though and I'm sure you learned a lot from making this game
I didn't make it past level 4, so I can't really make a comment on the story. From what I've seen though, it's nice, I liked the animation, it was really creepy. I wish you good luck on your next game!