https://store.playstation.com/en-us/product/UP0115-CUSA02134_00-KFGAME0000000001

The Killing Floor 2: Yuletide Horror Update is here just in time for Christmas and free for owners of Killing Floor 2! Featuring a new BOSS (The Matriarch), new weapons, a new map, and loads of other surprises await – including the Christmas zeds… Check it out now!

Rated Mature: Blood and Gore, Partial Nudity, Language, Intense Violence

Source: Playstation YouTube
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