New L4D update, should automatically update through your steam, heres the update notes:

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Survival Mode


New gameplay Mode

16 maps including Last Stand

Leaderboards

7 new achievements


Versus Changes

2 new versus campaigns

Fixed a case where versus team score would continue to be recalculated after the score panel was displayed

Fixed an issue with recalculating the versus score health bonus for a player when they are rescued from being incapacitated

Fixed being able to start a swing as an infected, then teleport to the survivors and have the claw swing hit a survivor

Fixed a case where teleporting to the survivors would not reset the ability timer

Fixed an exploit where you could load the chamber of a weapon with bullets by holding down the melee key

Fixed a case where it was not possible to join a game while it was in a finale

Fixed a rare case where listen servers would speed up the game over time

Removed convars related to melee fatigue

Fixed a case where infected players would get a respawn time on their initial spawn into a map

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