Tripwire Interactive announces the release of a new patch on Steam for Killing Floor, bringing the Twisted Christmas Thrill Chill 2014 update to the first-person shooter. This trailer shows off the update, and here's word on how this includes the chance to win DLC packs for 100 winners chosen at random:

Today, Tripwire Interactive is pleased to announce that the Killing Floor Twisted Christmas Thrill Chill 2014 update is now available on Steam! We're spreading some Holiday Cheer in the form of a new map (Thrills and Chills Amusement Park) as well as giving servers the ability to turn on all the Holiday Event Zeds whenever they want! Lastly we're giving away 100 Killing Floor DLC pack Steam codes for fans who email us a video of you and your friends playing the new map. Send your videos to thrillchillxmas@gmail.com

Note: This is not a contest of skill or a sweepstakes. Winners will be chosen at random from non-cheaters submitting clips before December 12, 2014. Enter early as 100 KF DLC codes will go fast!