Left 4 Dead 2 - Back To School Easter Eggs
A few references and secret rooms are hidden in the campaign.
Chapter 1 0:00
Chapter 3 0:21
Chapter 4 1:36
Chapter 5 4:03
Chapter 6 4:46
Download the map here:
https://steamcommunity.com/workshop/f...
https://www.gamemaps.com/details/6691