Crazy game. I played all the levels and it was a nice challenge!
I love puzzle games. I've played many of them. And geez, I'm a bit envious about your level desing skills XD You made so many cool levels, every one of them can be solved with a clever solution. There are a lot of cool interesting mechanics combined and almost every level is unique, different from the previous ones.
About that, maybe is a little too much for a demo? I would have liked to have some more "plain" puzzles. Not easier, just simpler, with less mechanics involved, because sometime I felt a bit overwelmed.
The only level that, in my opinion, need to be revised is level 35. I had to skip them after many try, and I understood the solution only after entering folds.
For the audio, even if it just temporary, I suggest looking for some royalty-free tracks. It can improve the game a lot. After a while the silence becomes tiresome.
Overall an amazing submission. I didn't even realize I had played it for so long lol. Great job!