I have made a list of custom campaigns supported. I have been searching the map numbers on the code and downloading them, since I wanted to try new maps and there is no exhaustive list on the thread.
7 Hours Later II
Blood Tracks
Blood Proof
City 17
Dam It Remastered
Dark Carnival Remix
Daybreak
Dead City II
Death Row
Detour Ahead
Devil Mountain
Diescraper Redux
Fairfield Terror
Fatal Freight
Farewell Chenming
Final Exam
Gas Fever
Gone in 60 Smokers
Hard Rain: Downpour
Journey to Splash Mountain
Last Ride
Last Summer
Precinct 84 (201
Road To Nowhere 2
Road to Ruin
Surrounded by the Dead II
Suicide Blitz II
Tour of Terror
Urban Flight
Wan Li
White Forest
Welcome to Hell
Yama
Five to Life > Possible typo: "l4d_5tolifef03" doesn't exist. This campaign has these maps: "l4d_5tolife01","l4d_5tolife02","l4d_agonizin g_city" and "l4d_dead_park"