Killing Floor adds 'London's Finest' DLC, discounted to $7 on Steam

As penance for scaring the bejebus out of us with its holiday update, Tripwire's Killing Floor sees its price slashed on Steam this week. From now until Thursday, December 16 at 4pm PST, you can grab the game for $7 -- 66 percent off the usual asking price.

There's also some new DLC available: London's Finest. This character pack adds four new bloody tossers (that's how you say that, right?) to the game and is available to download for $1.99 right now.