Nicely made! I like it a lot! The fact that you made it in Scratch makes it easy for me to mess around with it too and make changes, and on that note I think I have found a solution for you as well.
I recommend you try to use the costume “run_3” or “jump” instead of the idle sprite. You could make a couple changes to it if necessary, but I think that would improve the visuals immediately.
Additionally; I think you should make the hitbox collider look like this [image] instead, as it get’s you closer to the walls when sliding down. I also made it a little shorter so you can fit in between your platforms, but that is all up to taste.
I had fun playing and wish it was a little longer, actually. 😁👌
