(requires previous Left 4 Dead 2)(update v2.0.1.4 included in the disc)
Features :
- The Passing is a new campaign taking place between the "Dead Center" and "Dark Carnival" campaigns
- introduces a new uncommon infected in the form of the 'Fallen Survivor', a well-equipped zombie that may drop useful items, but instead of attacking, he runs away from the players
- also features two new weapons, an M60 machine gun which becomes unusable once depleted of ammo, and a golf club for melee
- The Passing is a new campaign taking place between the "Dead Center" and "Dark Carnival" campaigns
- contain new three maps
- players of Left 4 Dead 2 (L4D2) meet with three of the survivors from Left 4 Dead (L4D), another L4D player, Bill, is dead- introduces a new uncommon infected in the form of the 'Fallen Survivor', a well-equipped zombie that may drop useful items, but instead of attacking, he runs away from the players
- also features two new weapons, an M60 machine gun which becomes unusable once depleted of ammo, and a golf club for melee
