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:
-Fixed missing steam avatars in transition panel.
-Witches on fire will now continue to attack instead of sometimes flailing around aimlessly.
-When infected players slash at a jockeyed survivor, all damage will be applied to the survivor and not the jockey.
-Added some missing music files for the L4D1 campaigns.

Crash Course 1:
-Rescue closet doors that are blocked in versus are now inaccessible to both teams.
-Fixed the area portals near the howitzer event. Players should now be able to see through the infected-broken holes in the walls properly.

Crash Course 2:
-Rescue closet doors that are blocked in versus are now inaccessible to both teams.
-Removed a bad item cluster in the finale which was causing too many items to spawn.

Dead Air 3:
-Fixed an AI bot pathing issue with climbing the fence leading into the construction yard.
-Removed the ability to climb an electric box prop near the barricade in the construction yard. It should no longer be possible to skip the barricade event.
-Added an infected ladder to some pipes on the far side of the barricade to create a route for player infected on that side to easily enter the construction yard.

Blood Harvest 4:
-Widened the gap in the railing on the final bridge.
-Falling off the cliff or the final bridge is now fatal to both teams.

Blood Harvest 5:
-Fixed a potential bug for low-end machines where certain walls and textures near the starting safe room would vanish in certain views.


Cold Stream 1:
-There is now only a single hunting rifle in the cabin after the rope bridge.

Cold Stream 2:
-Moved the magnum near the start of the map, nearer to the other tier 2 weapons.
-Tier 2 weapons near the start of the map are no longer single-spawn.
-Adjusted cars and road props to reduce the chances of players getting caught on geometry.
-New infected ladders added.
-Added a weapon spawn in the tent on the barrel explosion bridge.
-Fixed an exploit that allowed survivors to climb the tent on the bridge to skip the barrel explosion event.
-Added an M60 under the barrel explosion bridge.
-There are now slightly more infected coming at slightly faster intervals during the end-level onslaught.
-Fixed a bug where players and infected could get caught in the geometry along the walls in the tunnel leading to the stairwell during the onslaught.
-Several minor visual tweaks and bug fixes for performance throughout the map.
-Added wrong-way signs to indicate when infected players have reached the end of the playable parts of the map.
-Fixed several spots where players and AI could get stuck.

Cold Stream 3:
-Added a new, much more obvious path across the tanker explosion gap.
-Tweaked the wooden catwalk area following the tanker explosion to make it easier for survivor and infected AI, as well as infected players, to navigate.
-The water now has a new texture effect which will work on low end machines.

Cold Stream 4:
-Fixed a melee weapon that liked to spawn inside of a table near the start of the map.
-Fixed a case where AI infected would sometimes get stuck trying to mount the drain to climb up toward the start of the map.
-Consolidated items in the tank fight area at the halfway point.
-Altered tank fight area in the stream so that AI tanks don’t spawn in nearly useless/sitting duck locations.
-Removed one of the triage tents and replaced it with an open trash/storage area.
-Added a pair new routes up the final tower for infected players to reduce AI common infected collision and pathing issues, and to give infected players more strategic options.
-Several prop adjustments for players using low-end settings.
-Added wrong-way signs to indicate when infected players have reached the end of the playable parts of the map.

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:

Blood Harvest Campaign:
- Item density revision.
- Several minor bugs fixed.

Blood Harvest 3:
- Fixed a potential exploit where survivors were able to jump to onto the cliff side prior to the train onslaught.
- Added tooltip to prompt players to fight to the safe room when the onslaught begins.

Blood Harvest 4:
- Changed the lights on first large train depot building to be non-solid, to prevent survivors from being able to jump into the upper windows.
- Moved a bookshelf in front of a window on the ground-floor of the last building in the level.
- Adjusted the slope of the concrete that makes up the bottom section of the last building in the map so that players slide off of it. It was previously used as part of an exploit to skip content.
- Doubled the height of the fence that leads around the last building in the map to prevent players from skipping the final building.
- Added tooltip to prompt players to fight to the safe room when the onslaught begins.
- Added new a new spawn location on the final bridge for infected.
- Removed a piece of railing along the final bridge to create an opening for infected attacks.

Blood Harvest 5:
- It should now be much harder to get stuck inside of the APC when it arrives.

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 revision
- Various minor bugs fixed.

Dead Air 2 – The Crane:
- Fixed bug where the tooltip for the Crane Event would appear near the start of the map instead of near the crane.
- Fixed an exploit where survivors could skip the crane event by jumping onto the fence and across the gap.
- Removed hotel luggage carts to prevent survivors from having their progress blocked.
- Removed an exploit where survivors were able to jump from the roofs following the crane to the ground, skipping the office section entirely.

Dead Air 3 – The Construction Site:
- Fixed a case where an SI ladder was being blocked by a door prop in the construction site.
- Fixed an invisible wall in a rescue closet in the construction site.

Dead Air 4 – The Terminal:
- Fixed a bug where the Van event tooltip would appear at the start of the map, instead of when nearing the van itself.
- Tweaked van event start so that the horde begins after the van begins to make noise, not before.
- Added tooltip to prompt players to fight to the safe room when the onslaught begins.

Dead Air 5 – Runway Finale:
- Added an info_director entity.
- Swapped out L4D2 mounted gun for the L4D1 mini-gun.

Death Toll 5 – Boat House Finale:
- Fixed a bug where the survivor closet doors near the finale could not be broken by infected players until the finale started.

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