I would experiment more with light bake off, especially in the well lit interior areas.
It looks like you got the Combat Evolved look down. Good job.
You've made some nice shapes here. Consider using more colors for the walls and make the floors stand out more. Think about highlighting paths in...
The shapes are nice.
This map has pretty colors.
"Where did I get shot from?"
Sounds like Battlefield. Do they have vehicles?
I'll add one. Avoid the swiss-cheese syndrome. If you are lacking walls in your map completely, try again. If you have way too many windows in...
I think if you used more visible boundaries for "glass" and fake light sources, this would be pretty epic.
Try shining some spot lights on key parts of the map. It helps with visibility and makes your map have both light and dark areas.
Do you want to give it a spooky New Londo theme?
Bearer, Grif, Grif, lest.
Do you want glowing window bars? Visible boundaries.
Or you know not requiring the Gold subscription for starters.