Hi, I'm one of the developer of this game. I assumed you were struggling with the first wall you had to climb up at the start of level 2. You can use shift to grab onto the walls and climb up the sticking wall to the left but sadly due to the time limit and my low experience level, I only used a script generated collider(not the actual player collider) to check whether the player is grabbing the wall and the problem is that you could get stuck at the edge of the wall due to the collider being too small and not enough for the player collider to get onto the top of the wall completely. The method I use for clearing that part of the game is to jump then quickly switch key presets and dash up to the top without climbing. Its very tricky and took me a lot of tries tho but I hope this helps you.
P.s. our game designer is very pleased by your comment, Thanks!