Left 4 Dead 2: The Last Stand Community Update is shipping September 24th, and we're celebrating with a free weekend!
Grab your friends and tackle the zombie horde in over twenty new survival arenas, four new scavenge arenas, and a campaign based on The Lighthouse survival map. New achievements, melee weapons, animations, dialog, competitive balance adjustments, and other surprises round out this official update for Left 4 Dead 2 created by the community, for the community.

Take a look at the new trailer here.

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