Excellent Campaign

Pros :
-Darker atmosphere which is perfectly fit with L4D1.
-No nav issue found.
-Intro dialogue
-Dynamic pathing
-Searchable corpses which is extremely rare in L4D1.

Cons:
-Some weird purple texture wall at the 2nd map
Overall, a well made campaign and definitely worth playing. The music now works well and the searchable corpses can drop other items now which make the campaign even better. However, there are weird purple texture on many walls at the 2nd map in my case. The screenshot about the weird purple texture is here https://drive.google.com/open?id=1aDLHESCU_mq_0T2zXXJSxOuJhmh73Enb