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: Activate the radios to begin a lockdown sequence. Survive the waves of zombies until the gate to the boss area opens.

Gather three shield parts scattered around the map to build your defense at the workbench. :

Locate the power switch to activate map-wide perks and traps. : Activate the radios to begin a lockdown sequence

: Build the antenna using your collected parts to establish a radio connection. The Finale :

: Find the car battery and the key hidden in different rooms; these are required for the antenna and the boss room access. The Signal : : Locate the power switch to activate map-wide

: Find and interact with the ringing phones in a specific sequence.

: Go to the house before the Quick Revive location and knife the cupboard to spawn a free monkey bomb for all players. The Signal : : Find and interact with

: Shoot the clocks around the map once the signal is active.