Thanks for the detailed feedback! I'm glad you enjoyed the one-button control mechanic, it was a lot of fun to experiment with. 113 coins is a solid score, and I think it's not actually possible to get all of them in a single run (there are two ways to get to the traffic light and you can't get back afterwards).
Good point on the wall jump discovery, I really wanted to include an in-game tutorial for the controls, but didn't have time for it in the end.
The level design was quite challenging, and I couldn't really start with it until I had the movement physics more or less locked in, so some parts are a bit rough around the edges and more difficult than I intended… I'm glad you still made it to the end. :)