So?

? I suppose this is something that is unfinished?
Very nice corridors. I would suggest here that you not recess the lights at the top of the arches. That way you could have a nice blue glow along with the spot light. as it is I feel that you need something to draw attention upward.
The red lights behind those fans are a perfect touch. It subtly emphasizes the detail of the area. I also like the light emanating form the cracked open door.
Do you use this texture as a blocker to imply that something will be there in the future? it is everywhere and in odd places at that.
Umm? yes darkness is a problem.
This area is great form a game play perspective, and reminds me forcibly of AVP esthetically. In general I like it allot, but I think you should decrease the environment light, and increase the artificial light intensity.
Overall it seems kind of aimless, like the corridors are winding through space for no reason. I don?t know what plans you have for it, but my suggestion at this point would be to make it into an arena featuring that biggest area (screen 6), maybe with smaller rooms as intermediates to connect the different levels.
There is also something I dislike about the lighting. I thin it may be the complete lack of regular white light, but I?m not sure. it all looks technically right though so I don?t know what to tell you.
edit/ looking back I see that you used to have a blue environmet light. I like that allot better than what you have now.