Hi, Thanks for the feedback. Not being able to hit the previous notes is a fundamental part of the challange so I wouldn't be able to do that.
I do agree wall jumping needs to be made easier, or possibly just clearer when it's ready to be used, I believe at some points when you slide down a wall it rapidly flips between thinking you're touching the wall or not but if you push into the wall it will be ready to wall jump, something to look into after judging.