My brain! It's really tough to see what I'm supposed to do and then also actually do it!!
I appreciate how the 'corrupted' areas stick around between attempts so even touching one platform in the correct dimension helps to pave the way forward if only a little bit. The visuals are beautiful, it's usually pretty clear how things work which is helpful since you can only see half of them at any time.
I noticed that the camera remains at the angle it was when you die, so respawning and having the view slightly to the left or right of center can make it a bit difficult to immediately move directly forward again.
Also I exploded a split second before the game told me that I won, I'm not sure if that's part of winning or if the final obstacle got me at the same moment I hit the end of the level.