I'm lost in all this corporation guff.
Right... here's some CC:
-The brick wall in the first 6 screens is too stretched. Not in a quality lacking way...its just the bricks are huge, and it makes the play seem like a midget.
-Change the roof texture aswell in the brick rooms, don't use the same texture for roof
and floor.
-I'm with Inspire, the wall/floor texture in the last 2 screens is bad, or maybe it's just the light. Maybe reduce the saturation of the texture so that it works more with the orange, because it looks like you have green slime on the original texture and the lightmap is not doing wonders for that
I'm also with Inspire about making your own game. You should always continue your game, even when not many people show interest. If you post screens and ask for C&C, then be patient and wait for someone to say something. Getting people to post on your showcase thread on TGC forums can be like getting blood from a stone sometimes, but you have to be patient, they may not have much to say at the moment, but if you keep changing your game, then they'll be flaming you before long.
Paul