I like the pyramid in speed of doom's map32. It's climbable, and you do climb it for combat purposes and progression, it's part of the gameplay. If you rely on it to hide from the chaos below you'll definitely remember it as integral to the map
It's ok
Map10 UV-Max in 1:38 rc2510m138.zip
(Gave me a reason to re-do the run with more effort put in. You can beat this if you just want to, I'd be curious to see how easily)
Kinda want to tablefill this wad more but I couldn't remember which maps I enjoy more. While idcleving through the maps to refresh my memory I got to map08 and went "oh yeah that map was neat, let's see what I can do". It is pretty fun
Map08 UV-Max in 5:02 roc2508m502.zip
I speedran map32 when the wad was still in RC state, but it desyncs now sadly. The time I had was 2:17 if anyone wants to beat it now (I don't, the map has a big issue with enemies just wandering away from you and hiding)