Zombies run amok in this L4D2 Cold Stream gameplay video
The Cold Stream DLC pack for Left 4 Dead 2 is now available on Steam, and to give you an idea of what you'll be facing, Pat and Sam braved the zombie hordes to bring you some gameplay footage. It's posted below.
Blame the audio issues on the zombies messing about with the communication systems. Sneaky bastards.
Based on a community campaign, the Cold Stream DLC pack includes the maps: Cold Stream, Blood Harvest, Crash Course, Dead Air, Death Toll and No Mercy. There's a few surprises in store as well.
You can get it for free on Mac and PC, and once it's available on XBL, it will run you 560 MS Points.