Really needs a list of controls I can see because it took me a while to figure out that I had to use C to crouch instead of shift or crouch, I also second what demontree said about remapping keys, I think it'd really help
I think it would be nice to work on this more in the future! I'd add more points in the game where the time travelling mechanic is made more urgent. I think you have a good foundation here for a good parkour game
also if you could check out and rate my submission too that'd be much appreciated! Hope to see more from you in the future!