Very ambitious and impressive game! It would definitely benefit from a little bit more polish: I encountered some glitches with cubes teleporting and refusing to be carried, ran into invisible walls. Also, far away lines were constantly flickering and wall running felt janky.
I couldn't figure out that it's possible to pick up the cube when I first encountered it. I thought it's a parkour game and that I had to bunny hop over the long gap and I got confused about the difficulty, but then read the comments and realized you can pick up cubes.
Despite the glitches, I enjoyed playing the game a lot and I'm really happy it ended up on this jam! Great job!