I think this map has some nice potential. Gameplay wise though there still aren't any 'true' base locations you can move too. I like the yellow tints in the map, maybe you could expand this in the somewhat bland areas. Architecture is interesting so i was surprised to see certain things like the area around doors go undetailed while other things were supremely done like the weapon rack.
Also a warning to you and any other mappers. Be careful with playerclip in certain locations. I for one was a bit annoyed with not being able to hide above the lava dam, or enter the area near the lava. Try to find different methods of restricting movement since playerclip is a last resort and can break the feeling of a map.
All other things seem well. Keep it up and get it done for the next version of trem

.