That is supposed to be the Power Generator of Doom!!11eleven but it hasn't really worked out :/ And probably put up better screens as well

1^st screen: Way too many lights! I counted something like 12 lights and yet none of them cast enough ambient light into the area to properly light it. In real life people generally don't build structures with that many lights and it looks odd when you see it in a video game (unless there is a good story behind it). Nice architecture here tho.

2^nd screen: I agree with Cassius on this one, the brushwork isn't too flattering. Again, people don't just build giant dangerous generators in the middle of a room and call it a day. I think it would look good if you lowered the floor around the base of the generator and put up a guard-rail surrounding it. Hope I explained that right cuz it looks cool in my head haha. Also the red squarish looking thing doesn't do much for the scene and is probably raising r_speeds a bit much.

3rd screen: I like this one alot. The architecture looks pretty good and I like the steam coming out of the vents. I think it could look better with some fancier textures tho (this applies to all the screens).

4th screen: From what I can see it looks ok, but the red and blue alternating lights just looks wrong. I think the texturing looks best on this screen.

I like the elaborate brushwork of this map but there are also some flaws (most noticably pic 2). The lights don't seem to be working too well and there isn't much contrast. Textures are over-simplified but the ones in the 4th pic look good. I'd use that as a base scheme for the rest of it. This map looks like it needs a bit of work but I think it'd be worth it in the end. This might sound wierd but try writing a background story for the level. Even if you don't include it in the readme it can help alot to flesh out your ideas and can end up going a long ways in terms of ambience.