I really like the variety of mechanics in this game, and all the different animations going with the mechanics is also really awesome!
I also struggled with the wall jumping until I read one of your comments below about NOT pressing WASD while wall jumping. That worked!! I could finally get past the first obstacle lol. Even though the game was short, I would have loved a couple checkpoints just so I could bypass that first wall and focus on the next one. I also would have liked dash to be a keyboard key instead of having to use one hand on the mouse just for that.
The game really captured the feeling of speed and agility. Classic stick figure superhero style. Nice job!