Instructions
Head toward the rooms located adjacent to the theater. Collect the claymores located on the wall across from the power switch. Exit the room through the door located next to the power switch.
Walk through the next two rooms and head toward the stairwell located at the far end of the second room. Go down the stairs and exit through the door on the ground floor that leads to the alleyway. Stand with your back against the gate located at the end of the ally, but don't open the gate.
Cover the doorway to the stairwell and the window that overlooks the alleyway. These are the only two points of entry for the zombies to attack as long as you don't open the gate behind you. Have all of your teammates in the alleyway before the first wave of zombies attacks.
Stay entrenched in the alleyway and have two team members cover the window while the other two cover the doorway. Communicate with your teammates in case you need reinforcements at one of the positions to keep from becoming overrun.
Listen for the music to change and for the waves of zombies to stop; this is an alert for an impending hellhound attack. Plant the claymores you collected in a line in front of your position and use your shotgun to target the heads of any attacking hellhounds. The last dog to die will drop a "Max Ammo" bonus, so be sure to reload your weapons prior to picking up the bonus.
Continue blasting zombies and hellhounds in the alleyway until you reach the end of the game.