Pros:

+Awesome maps
+Awesome cutscenes
+Nostolgia Overload
+epic easter eggs (especially the bioshock shop)

Cons:

-Last stage is really hard
-first time i tried to play it i got lightmapping errors

Conclusion:

Probably my sencond favourite map after Let's Build a Rocket but props to you on everything just need to fix so difficulty settings

Pros:

-Nice & Challanging
-Nice Concept
-Special Infected aren't too bad of a Problem

Cons:

-too short of a set-up time.
-Too many Common Infected
-Easy towards the end

Conclusion:

Really good map just need to spawn LESS infected over time D: