It is ok I guess, I dont mind the dullness it makes it look moody and probably it's best point of the map.
I also like the concrete walkway that has crumbled away, with little sections still hanging on to the metal beams it looks really good.
Can see a couple of sloppy placed objects (concrete ramp on the right of fist pic sticking is above the floor by about 0.20 and the patform you start on and the one opposite, the damage looks unnatural as the edges are so straight , It sticks out compared to the rest of the destruction)
The rust colour seems overused too, and I am confused why there are pink/orange lintles or beams above the entrances, it is a very strange choice of colour.
Overall 7/10 Good layout, nice moody feel, overuse of same colours, sloppy placements and I can tell just by looking at it that in multiplayer there will be soooo many graphical glitches from the beams through the conctrete especially for people who play on lower graphical settings.
Overall 7/10 definate downgrade from your last work.