There were definitely some interesting puzzles here. The one shown in this screenshot below almost stumped me but I eventually figured it out. Reminds me a lot of the recording mechanic in The Talos Principle. My only issue is that I hardlocked the game on the level after this screenshot, the one with a block directly behind a pit of spikes. I somehow got the block to fall into the pit, but I didn't quite understand how it happened so I tried to reset the level, except the rewind effect never stopped so I had to quit out.
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It was definitely still a good time, just wanted to report it so you were aware and to try to help fix it if I could. My best guess as to what happened depends on how the reset level button works. It looked to me like the reset was playing things in reverse similar to what happens when you die, with the player's reflection undoing every interaction the player had with the environment, and I imagine the reflection was having difficulty getting the cube back out of the pit. Having the reset level button actually reload the scene, placing you at the entrance of the first unsolved puzzle, would fix this; this would also be helpful for implementing a save system, as the first thing I did after closing the game was reopen it to see if I could continue from where I left off but I couldn't.