Wow!!
I've seen this concept of creating clones of your previous runs and using that to aid you in the future replicated several times across the 'loop' theme, but you excecuted in one of the best ways I've seen!
Your level design is perfect, doing everything a level should: introducing the player to new mechanics and variables with a slowly increasing difficulty curve. There are so many details that bring this game to life, to name a few: the rewinding before you respawn, the unique art style, the new mechanics introduced every level that keep the game interesting, and so much more. It is clear a lot of time and effort was put into the game.
You've managed to add a lot of content as well, adding even further to the impressive factor. The menus are intuitive, the tutorial logical and extremely helpful, and lots of different levels to play.
One quick suggestion: maybe make the jumping more realistic? It is more of a long, slow glide here.
That's all I have to say! I am quite impressed and applaud the spectacular effort 😄