Here's my initial experimentations with L4D2 (and source for that matter).
Here's a map of the route. The campaign will be based on this loosely. Also, how do I fix the sky?
Ok, now that we're warmed up a bit. I'm doing a short point A to B type campaign map for L4D2. Kinda based on how me and some friends once ran to the store to find snacks and drinks for our epic video game over-nighters. We used to talk about Zombie apocalypses along the way and sometimes pretended we were in one. Behind my old house in my hometown, there was some reinforced metal storage lockers, it was mentioned that it would be a great place to hide out.