The settings are pretty standard - extra and a smooth value of 80, bounce 0. It was more an act of moving polygons to avoid the otherwise inevitable lighting seams - the broken floor is probably the best example. There are no seams on the rubble because I had to delete/shift half of it to get it to look like that

I must be old fashioned.
New screens as soon as I think of another area - I'm thinking a hospital.
The map will be a Svencoop/singleplayer deal with a portion of it entered in the contest as an HLDM map.