My walkthrough .

This map seems to be more about timing than solving a puzzle. Personally I skipped it to solve your other maps. Maybe good for someone else but not for me.

Finished with 1 block of extra height to spare, intended? I think so, I can't think of any other way

It is frustrating. Unfortunately I can neither edit existing maps nor create new ones, as my level editor is broken

Clever first 3 chambers. It's like the no elements collection for the experts :P My only problem with it so far is the portal surface in this level that has 4 lights around it. I've had a few times in this chamber that a portal wouldn't register because of them. Consider moving the lights in another place if you really need it. they're not necessary. They only make it frustrating.

very advanced stuff