Learn about the L4D2 gameplay for Campaign 1: Dead Center - Atrium. Get the goodies and walk out of the safe house. Turn right and go down the hallway, making another right through the door at the end. You will find yourself back in the mall. Continue on the makeshift walkway, bearing left at the end until you reach an elevator. The blue door across from you is a dead end. For more info, watch the whole gameplay.
This is a L4D2 walkthrough for Campaign 1: Dead Center - Atrium.
Mahalo's Left 4 Dead 2 Walkthroughs are more than enough information for you to play the game yourself, and they teach you everything your need to be prepared for when playing yourself. These videos contain tips for obtaining campaign achievements, fighting the infected, using the new weapons and items, and moving through each chapter. This video walkthrough focuses on Campaign 1.
Left 4 Dead 2 by Valve is the action-adventure, horror, first-person shooter video game playable on the Xbox 360, along with Microsoft Windows. L4D 2 is the direct sequel of L4D and is set in the zombie apocalypse. The game takes you and your friends through the cities, swamps, and cemeteries of the Deep South, from Savannah to New Orleans, across five expansive campaigns. You will play as one of four survivors armed with a wide array of classic and upgraded weapons for ultimate zombie killing.