Thanks , i appreciate a lot the details of your review!!
-When the player jumps I decreased the speed of the player a bit so you don't have much control while in air ,I think that gave you the feeling of rewinding faster.
-It never occurred to me that the game may be difficult
When I was playtesting it with my friends every one could beat it in around 10 minutes.However the jump after the second coin, they did find it tricky.I chose to leave it in the game because when I asked them in the end they told me it was their favourite.But just to be sure I added a hint if you died 4 times And I put a checkpoint before the jump
I don't know why the checkpoints didn't work
Anyways, for the next jam I should focus a bit more on level design because the difficulty was unintended
Again thank you for playing my game,and I am sorry for not being able to play yours