I think I've pretty much got the layout and clipping sorted out, would anyone like to test it pls?
Thanks for the advice, this is what I have changed so far:
Edited 3 days after the original posting.
I'd like a serious review of this map in terms of spawn points and item placements.
In 2011 I was making a map called The Gloom and I stopped, in fact I mostly stopped mapping until just late last year. I begun finishing off the map I was making and I'd like for some people to try it out and help me find and fix bugs. I would appreciate it a lot, thanks :).
So I guess it's just some weird hex that's been put on me and my maps?
By caulked I didn't mean the brush for the fog itself, I meant I put caulked brushes around the fog so it wasn't out in the void. I've trying change the scale of the brush, tried it without adding caulked brushes around the fog, tried having it so the brush only ends at a wall (which just creates more problems).
The stairs are set to detail brushes, and like I said before the fog has been caulked on all sides except for the top.
I just compiled it without lighting because it takes a while to do it.