There's a lot of potential in your idea. Here is my feedback:

• Either let people use WASD or not but don't let them use just A and D, it took me 30 seconds to figure out how to jump. It's the first impression you give to your player, don't mess it up!
• You can constantly jump avoiding most of the obstacles. I'd say make a "stamina" bar, when it's depleted you can't jump anymore.
• I got really annoyed by the labyrinth, I think it's a cheap trick and it feels like a waste of time.
• Rewinding got you back to level one, it could have been nice to start at the beginning of the level you were at.

With a bit more work, you have a really nice, enjoyable game in your hands! Keep up the good work! 

So: The graphics are too simple, the music is nice. The problem is the controls and the texts. The texts are blurry and you can jump all the time when you spam.  You can move with A and D and with the arrow keys. Why don't you jump with Space or W? Because you can spam, you win in 3 minutes. When you win, you have to press Alt F4, why is there no Quit or Menu Button? And Rewind is not, because the level is restarted.
If you had put more time into this game, it would have been cool :)

It would be cool if you would play my game too^^
https://itch.io/jam/brackeys-4/rate/724694