Pros:

-The building structures were great in complex, detail, design, and location.  They weren't too far out from each other as I've seen in many other city maps.

Cons:

-Missing Doors
-invisible objects
-blocked passages where you couldn't go through, I was in this one building where I tried to go down the stairs and I had to go through this door and hole in the ground to get there when it would have been much simpler to just run down the stairs.
-In many safe rooms they was missing doors and great parts of the walls were missing as well. 
-I also would get stuck in thin air sometimes
-At some points I could close doors

Conclusion:

I really like the idea of this campaign and how the maps had the proper amount of weapons and health kits as I played but they were too much flaws and not enough color variation even though the buildings looked fine too much gray got boring after a while. I would enjoy and update to this if available but for now I'll give it a 3/5 at the most