Safes (Zombie Army 4: Dead War)

At the beginning of the last level "Infernal Machine" in the shelter there is a device that opens a safe in the sewers, in the shelter, press the lever near the slightly open door and near the device so that the current flows, the device will light up green, turn it on, press the lever in the sewer, the device will turn green, turn it on him, the safe will open.