The aesthetics of this game are SO cute, and there's clearly been a lot of effort put into having a ton of levels! ...Unfortunately, the physics system holds this game back to the point of nearly being unplayable. I had to restart levels dozens of times due to boxes clipping through platforms, there were times my character was moving & pushing boxes even when I wasn't pressing the controls, etc.
I think for future jams, I'd maybe advise scaling back the number of levels so you have time to really refine the physics & controls.