What changed in Killing Floor in 2011

Claymore sword weight in-game now matches the trader menu.

Prevented self-damage from team collisions with grenades and rockets.

Prevented self-damage from team collisions with grenades and rockets.

Resolved issues with double usage of grenade launcher ammo.

Claymore sword weight in-game now matches the trader menu.

Resolved issues with double usage of grenade launcher ammo.

New free weapons have been added for players during the free weekend.

The Twisted Christmas event has started.

The game is available at a 75% discount during the free weekend.

A new trailer for the game has been released.

New weapons have been added for every perk to enhance gameplay during the event.

Evil Santa and the Gingerfast welcome players to the Twisted Christmas event in the Ice Cave.

Commando, Demolitions, Support, and DJ Scully characters are now available.

Evil Santa and the Gingerfast welcome players to the Ice Cave with new weapons and achievements.

The remaining Steam Punk characters, including Commando, Demolitions, Support, and DJ Scully, are now available.

Players can gather new achievements while battling Evil Santa's minions.

Players can stock up on new weapons tailored for each perk.

A new DLC character pack named Steampunk 2 has been released.

The Christmas Zeds return for the holiday season.

A whole bunch of new weapons introduced.

A new DLC character pack named Steampunk 2 has been released.

New achievements have been added, including the return of old Christmas achievements.

A whole bunch of new weapons have been introduced.

New achievements have been added, including the return of old Christmas achievements.

A new map called Ice Cave has been added to the game.

A new map called Ice Cave has been added.

The Christmas Zeds return for the holiday season.

Twisted Christmas 2 event runs from 7 Dec to 4 Jan.

The Twisted Christmas 2 event will run from 7 Dec to 4 Jan.

Killing Floor will be free to play from December 8 to December 11, 2011.

The Killing Floor Halloween event has been extended to allow Mac clients to participate.

The Killing Floor Halloween event has been extended to allow Mac clients to participate.

Resolved various issues affecting Windows servers.

Servers have been updated to support the Halloween event.

Earnable by completing Summer Sideshow achievements during the event.

The event features Halloween-themed creatures and special achievements.

Unlockable character available by completing Halloween achievements.

Unlockable character available by completing special Halloween achievements during the event.

Servers have been updated for the event.

Includes Frankenpound, Husk-O-Lantern, Werebunny, and more.

Opportunity to earn and unlock Steampunk Mr Foster by completing Summer Sideshow achievements.

A new batch of special achievements set in Bedlam for the Halloween event.

The Halloween event features new creatures like Frankenpound and Husk-O-Lantern, running from 27 October to 3 November 2011.

The Summer Sideshow Event has officially started and will run through the weekend of 23/24 July.

Players can now hunt down Pukey the Clown during the Summer Sideshow Event.

The Summer Sideshow Event has officially started and will run through the weekend of 23/24 July.

Players can now find and attack Pukey the Clown during the Summer Sideshow Event.

Her chamber is now open.

Various bugs and exploits in maps have been fixed.

We have addressed a connection hang issue between clients and servers.

Aperture has been updated - Her chamber is now open.

Addressed a connection hang issue between clients and servers.

A complete, fully-functional Portal-themed level has been added to Killing Floor for all clients.

A complete, fully-functional level themed around Portal has been released for all Killing Floor clients.

Exploits fixed in Departed, Evil Santa's Lair, Farm, and West London.

The mutator whitelist and greylist have been updated.

The mutator whitelist and greylist have been updated.

Exploits fixed in Departed, Evil Santa's Lair, Farm, and West London.

A new Greylist feature allows perks to reset to their original state at the start of a round when the map changes, enabling use with mods and mutators.

A new Greylist feature has been introduced, allowing perks to reset to their original state at the start of a round when the map changes.