There are 3 Dead Ghost to be found in Bunker War-4. They can be collected on any mission or during a patrol. Each Ghost can only be collected once per account.
Ghost 1[edit]
Head into the narrow corridor where, in the Fallen Saber Strike you need to dodge the electrical beams.
Head down toward the end where you would collect the Sphere, to the left.
Ghost 2[edit]
Head into the room just before ascending the stairs to reach the boss of the Fallen SABER strike. Look for the massive window overlooking where you are going. Look up. You will notice one of the lights is out.
Jump up onto the glass and then jump again to make it up to the light fixture. On the right-hand side is the Dead Ghost.
Ghost 3[edit]
Head up the stairs leading toward the boss room of the Strike. Halfway down the hall that lets you drop into the control room, on the right-hand side, is a grate you can shoot out. Using your Ghost you can see it highlighted.
Duck and head inside it. Just around the corner is the final Ghost of this strike.
