Today marks the release of a new update for Left 4 Dead 2 through the Steam service, bringing the start to the Dead Air Campaign Beta.
Dead Air is a campaign from the original Left 4 Dead, that was promised to the Left 4 Dead 2 community by Valve if 20,000 players earned the Stream Crossing achievement for completing the Cold Stream campaign by July 10th.
The challenge was completed by 60,000 players by the set deadline, and today marks the promised release of the campaign, hence today’s update.
There are 5 chapters to the campaign, The Greenhouse, The Crane, The Construction Site, The Terminal and the Runway Finale.
Hope you catch your flight!