Assuming you're including the DLC (As of 2013)
No Mercy, Crash Course, Blood Harvest, Dead Centre, The Sacrifice, The Passing, Dark Carnival, Swamp Fever, Hard Rain, The Parish.
(Campains not canon in the story line)
Dead Air, Death Toll, Cold Stream.
(Not Including L4D1 Crossover DLC)
Dead Centre, The Passing, Dark Carnival, Swamp Fever, Hard Rain, The Parish.
(No DLC)
Dead Centre, Dark Carnival, Swamp Fever, Hard Rain, The Parish.
Chat with our AI personalities
Yes there is split screen for left 4 dead 2.
4 players can play in Left 4 Dead 2.
It is a Key that will unlock the Left 4 Dead 2 in your steam library
You can purchase The Sacrifice DLC for Left 4 Dead 2, which has you play as characters from the first game. Additionally, you can put character skins of the original characters onto the characters of Left 4 Dead 2 (Only in the PC version)
gnome chopiliski or i cant spell its name its a gnome you try to win in the left for dead 2 dark carnival part 2 you can use it to wack zombies and if you last 5 levels until you survive and beat the concert with gnome chopoliki you get an acheivement it will be hard make sure you take your time and try to find gnome chopoliski