Cool idea! the puzzle parts with the pressure plates and doors and stuff remind me a lot of The Talos Principle.
also how your past selves fight for you is a really cool effect and I like the low poly style.
I do have 3 big problems with the game, however.
1. Sometimes inputs are eaten. There were multiple times I pressed roll and did not roll.
2. The time it takes to "rewind" after death is really long, it feels really punishing to die, but some puzzles you need to die to solve them.
3. The framerate is really low - this isn't as huge a problem as the other two, it would just be nice if it was higher. I can understand having it run at a low framerate if you want it to kinda have that "old school" style that the cover has, but in my opinion, low framerates and slowdown should stay in the past.