Hello, I really enjoyed the game!
I think it has the right amount of difficulty and the wallrun mechanic helps keep the gameplay loop fresh.
My only suggestions would be to add a volume slider and an option to press R to restart rather than having to click the restart button. It felt a bit unnatural for me to use the mouse for just the menu when the game is played with keyboard only.
The only major bug I encountered was the game would suddenly go black after dying and wouldn't let me restart.
Unfortunately it happens very randomly so I don't know what the issue could be.
Really impressive to make a game like this in one day though!