All the maps look nice except for Backslash. The display cases for the weapons look way out of place. They are just cuts into the wall and look totally unnatural, I think you should just let the weapons lay on the ground.

I like Vertigo a lot, I would definitely download it. I would probably download all of them except Backslash, it just looks like a Longest clone, and I hate small maps. That's just me though.

I'd be glad to help, if you need anything just send me a PM.