Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Item density pass.
- Minor visual bugs fixed across all maps.

Death Toll 1:
- Fixed a case where several rock props were intruding through a wall near the safe room.

Death Toll 2:
- Fixed an case where survivors could jump into infected-only areas using an electrical box in the bridge holdout room.

Death Toll 3:
- Removed an exploit where players could jump from the wheel pedestal of a flatcar onto a train car to skip the balcony area and exit the train yard.
- Altered the PZ spawn area near the train yard exit. Instead of a tanker and a pile of gravel, it is now an overturned truck and van.
- Church guy zombie returns!

Death Toll 4:
- Blocked survivors jumping onto the left bus from the fence near the start, which allowed players to skip the beginning of the map.
- Fixed pipe hanging in the middle of a room during end-level onslaught.
- Removed the mounted gun, as this was causing players to try to outlast an infinite horde.
- Added tooltip to prompt players to fight to the safe room when the onslaught begins.
- Fixed a case where survivors could climb an electrical box prop into infected-only areas during the onslaught.
- Fixed end-level trigger size exploit, which allowed players to stall the end of the map trigger by standing on top of a water-cooler.

Death Toll 5:
- Swapped out the L4D2 mounted gun for the L4D1 mini-gun.

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Fix for Windows Dedicated Servers operating in LAN mode only.

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

General:
- Added game event calls for onslaughts to explain to players that they need to fight their way to the safe room.
Modders can make use of this by pointing an info_game_event_proxy entity to “explain_onslaught”
- All maps received minor tweaks and bug fixes , the significant changes are listed.

Crash Course 1 – The Alleys:
- Item spawn density revision.
- Opened the side-doors leading to potential item spawns.
- Switched out L4D2 mounted gun for the L4D1 minigun.
- Removed exploit where survivors could get onto a roof near the drop down to the river.

Crash Course 2 – The Truck Depot Finale:
- Item spawn density revision.
- Switched out L4D2 mounted gun for the L4D1 minigun.
- Removed exploit where survivors could jump onto the top of a generator during the finale.

Cold Stream 1 – Alpine Creek:
- Fixed water moving uphill in some spots.

Cold Stream 2 – South Pine Stream:
- Removed “shortcut” through the bushes between a pair of barricades leading to the barrel explosion event.
- Added tooltip to prompt players to fight to the safe room when the onslaught begins.
- Tuned the horde numbers back a bit during the onslaught event.
- Moved the sun to help guide new players.
- Blocked ability to get under the river.

Cold Stream 3 – Memorial Bridge:
- Added many more infected ladders around buses.
- Rebuilt catwalk under the bridge to prevent players getting caught on geometry.
- Moved the M60 and Laser Sights upgrade to more vulnerable locations.
- Removed ammo pile in the shop just before the junk yard, but kept the weapons.

Cold Stream 4 – Cut-throat Creek:
- Added some light cover for the tank in the basin area.
- Removed survivor manhole exit into the second half of the map.
- Added side-hall in the sewer as a shortcut for infected players going to the second half of the map, and as a strategic place to spawn in the sewer.
- Added new truck depot area near the tower for infected to spawn in.
- Opened a warehouse door for infected to spawn in.
- Added infected ladders in the CEDA checkpoint area.
- Rebuilt stairway up the finale tower to prevent players getting caught on geometry.

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Reverted some new driver settings that caused bad glows on some video cards

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Fixed a bug where server tags were getting truncated, preventing players from finding Steam Group servers.
- Updated video card database with the latest hardware

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Adjusted Holiday Gift Drop frequency

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Fixed Tank Spawning issue in Finales
- Fixed issue in Boat House finale where winning survivors would die on the boat
- Added new achievement, Valve Gift Grab 2011 – L4D2
- Added I Hate Mountains 2 as the featured community campaign
- Added blocklist functionality to Left 4 Dead 2

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Mutation: Headshot!
- Fixed a few missing or invalid entries in campaign menus.
- Fixed a long standing bug that could cause occasional memory corruption or crashes on level transitions.

Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- New Community Mutation: Confogl
- Crash Course campaign
- Fixed intro music not playing in some campaigns
- Fixed some missing survivor audio

Release Notes:
- Encore Mutation: Iron Man