Hey man, I just did a quick flyby to see what was up and I have a couple things I think you should know about....
First, in terms of scale and all that it seems pretty good, and should be relatively fun to play!
However, you seem to be missing a few textures and models! Either you've chosen broken models and textures, or you haven't packed the custom ones you used into the bsp properly. Here are some pictures to show you some of the problem areas:
The purple and black texture might be present on your computer, but it isn't on mine! (Or there's an error). Same with the error model.
Finally, I would quickly suggest that you change your final point a little bit. In general having only shutter doors as a way into an area is a bad idea, it makes it too easy for the defense to control. In addition, your final point is very barren and the defense doesn't have anywhere good to set up - meaning that they're probably going to be camping those doors like crazy.