It looks kind of bland/boring from the pictures, but I could be wrong. I'll put it up on the server and give it a test.
Edit:
1. The map is too dark.
2. It has leaks.
3. The fog looks like crap.
4. You can fall out of the map.
5. It's bland and badly made overall.
6. It's not fun to play on.
I don't want to sound like an asshole, but the map is crap. You should practice MUCH more before you release anything more. Everyone on the server agreed to remove the map right after playing it.
Alright, lets start off with a few things.
1. This is my 4th released map.
2. The hallways aren't going to be rainbows. What did you expect it to look like when the map is post-battle?
3. You need to tell me where you can "fall out"
4. There aren't any leaks, the water works fine.
5. What did the players say that made it "Not Fun"
6. What makes it "Badly made"