For this week's This Week in Co-Op, Tally and Eric decide to tackle Left 4 Dead 2's new DLC, entitled Cold Stream. It's been awhile since either of them played L4D, it's a new map, and while Eric's a vet at the game, he's never played it on PC before. How will this all turn out?

It sure took Valve a long time to get to this point, but now we have an official release date for Left 4 Dead 2 campaign, “Cold Stream”, set to release later on this month.

After months of play-testing, Valve has issued one of the most significant patches to the “Cold Steam” campaign and remaining Left 4 Dead maps. As the full DLC is scheduled to be released on the PC version of the game very soon, Left 4 Dead 2’s newest campaign additions are looking to accommodate the main differences of L4D2 from L4D as smoothly as possible.