The game looks very promising at the beginning, but it quickly falls off when the tutorial ends. I personally enjoyed the looks of the tutorial much more, than the actual levels. I have to agree with others that lack of feedback, and a very weaird fx of player shooting, that also lacks any feedback of hitting the target is making the game really hard to enjoy. Sometimes rewind was straight up useless, especially when you start shooting the turrets while the text is still on screen in first levels. I also had some motion sickness in the first "elevator" and had to look away from the moving part, but that maybe just me.
I will say, that despite the above, the game is quite impresive in execution for a game jam game. The movement feels nice, the rewind works with a good feedback of how the player is rewinding, it's just a shame that little things like no indication that you're being hit, no way to dodge turret shots and so on can ruin the overall feeling of the game, and I would also really enjoy it more if you stayed with the tutorial-look, but that's subjective.
If I have to point out one thing that stood out to me from this game it would be how the music rewinds with the player, that one little detail is great.
Hope feedback from me and others will help in improving the game. Good luck for both this project and any future projects.
Cheers