Good puzzles :)
It is impressive that you made everything by yourself! Well done :)
To add my personal thinking:
- It miss a bit of a story, here we just solve the levels for themselves. You said on the game page they try to flee from an old factory, I would have liked to get more on that (a beginning, an end,...)
I know it is because of Game Jam time, so no problem, but it is pretty much what it lacks to be a ready to ship game imo. That and a few more levels (and two / three bug fix, polishing, ... ofc).
Nicely done :)