Fascinating concept! I played your game for 10-15 minutes, and while it looks unintuitive, you can actually get the hang of it pretty quickly. I didn't like the parkour/timings very much. The movement felt very clunky, and I didn't like that you cannot look up and down, especially considering some of the levels have significant verticality in them.
In the 3rd level (I think) you had to do two relatively hard jumps after each other, which made it very frustrating if you nailed the first one, but failed the second. I didn't finish the game, because the levels we're getting too challenging for me (maybe thats my incompetence though, I am getting older after all). All these things aside though, I was very impressed with this game, and the things I mentioned are more minor gripes then they are flaws. Well done!