Ah, which part did you get stuck on? I hope I didn't make something too convoluted!
It was the area with the 3 pillars with one moving up and down if that makes sense, I assume something was meant to be done to make it go up instead of down but I couldn't find anything to trigger that.
If you set the key to E you can jump over all the pillars (might need to do it on beat, don't remember).
