This was super interesting, I liked a lot about it. If you don't mind some feedback:
- There should be a little more forgiveness when jumping, right now you can only jump while on the platform, but it would make timing a little easier if there were a few frames of forgiveness.
- The segments where the Platform goes sideways could use a slightly wider collider. I found them a little too difficult / frustrating.
I liked what you did with the panels fading in, it gave me plenty of Forewarning.