This is a really interesting idea that seems to be held back by bugs. Firstly, the controls were kind-of non-obvious to me, and it wasn't until I thought to check the actual game page that I learned how to pick up boxes. Some in-game control prompts would be helpful. There are some weird physics things, such as the forces/impulses when the game forces you in a direction and the jump you get from springs (both the bounce and the double jump after). (Also, there's weird issues with things like wall collisions, but I know that's just a problem with Unity's 2D physics). I also had issues with the "narration" not always working in a few spots. It also seems like the ending is a little incomplete (there's no narration there?). Despite all these issues I had, I still found it interesting, and would be interested in seeing what could be done with more development time.
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Thanks for the feedback! I was going to put a controls menu in the game but I didn't have time to make it. The game pushing you back after trying to go the wrong way did have a glitch where it kept adding force after you were outside of it, but I couldn't figure out why it was doing that. And the dialogue is very unfinished as I didn't have time to get everything done. I will definitely update this after the jam is over.