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The Pack-a-Punch Machine freed on the Roof of the prison, under its sign, Blood of the Dead, Call of Duty Black Ops 4 Zombies

Blood of the Dead:
Power, Spectral Shield and Pack-a-Punch

How to turn on the two power switches of Blood of the Dead, build the Spectral Shield from its three parts, free the Pack-a-Punch on the Roof and upgrade to the Attuned Spectral Shield.

  • 3 min de lecture
  • 5 chapitres
  • mis à jour

The power

On Blood of the Dead, the power comes from two switches. The first one is in the Power House, in the back left corner of the building, next to a large sign that reads « Lights Out ». From the laboratory, the way there goes through Model Industries and the West Grounds. It powers the lower parts of the prison and the entrance of the Catwalk.

The second one is in Building 64, by the Docks, in a small room on the far right whose floor reads « No One Escapes ». It is reached through the Catwalk, the Recreation Yard and the prison, down the Citadel Tunnels and China Alley. Once both switches are on, the Warden appears near the players.

The Spectral Shield

The Spectral Shield replaces the Afterlife of Mob of the Dead. Held in front, it blocks damage like any shield, but it also carries the Warden’s Key: the player drains the souls of nearby zombies with it, then spends the charge in a Spirit Blast. Simply aiming with the shield shows the spectral world, where many secrets of the map can be seen. It is built from three parts at a workbench.

Broken metal door, the frame part of the Spectral Shield, inventory icon, Blood of the Dead, Call of Duty Black Ops 4 Zombies

Shield door

A broken metal door leaning against a wall, in one of three places: on the way down the Citadel Tunnels, at the bottom of their stairs, or in China Alley by a barrier.

Spectral Essence

On a glowing power box inside the prison, in one of three places: Times Square near the stairs to the Showers, Michigan Avenue outside the Warden’s Office, or the Library by its doorway.

Warden’s Key

Dropped by the first Warden the players kill.

The workbenches are at the Docks, just to the left of the door of Building 64, and on the Cell Block 3rd Floor, on the way to the Gondola. A third one, in the Transverse Tunnel between New Industries and the Power House, can build the shield or the Acidgat Kit.

A player draining the souls of zombies with the Warden's Key of the Spectral Shield on the Docks, Blood of the Dead, Call of Duty Black Ops 4 Zombies

Absorbing souls

The Warden’s Key pulls the souls out of zombies until it glows blue. The shield holds two Spirit Blasts.

A Spirit Blast of the Spectral Shield hitting a zombie, Blood of the Dead, Call of Duty Black Ops 4 Zombies

Spirit Blast

Fired with the shield raised. It powers the voltmeters of the map: the Pack-a-Punch, the cell doors that hide free power-ups, the keypad of the Citadel Tunnels and the crane of the Docks.

The shield

A barred cell door with the Warden’s Key on its front.

The Pack-a-Punch

  1. Turn on the power and build the Spectral Shield.
  2. Charge the Warden’s Key with the souls of a few zombies.
  3. Climb to the Roof of the prison, through the Cell Block 3rd Floor and the Infirmary.
  4. Fire a Spirit Blast at the voltmeter on the roof, where the plane Icarus stood in Mob of the Dead. The spirits that hid the machine are released and the Pack-a-Punch Machine appears.
The voltmeter of the Roof seen through the Spectral Shield, Blood of the Dead, Call of Duty Black Ops 4 Zombies

The roof voltmeter

The target of the Spirit Blast, seen here through the shield.

The Pack-a-Punch Machine freed on the Roof of the prison, under its sign, Blood of the Dead, Call of Duty Black Ops 4 Zombies

Upgrade

5000 points for the first upgrade of a weapon, 2500 for each new pack.

Three places

After the roof, the machine moves from time to time between the Roof, the Power House and Building 64.

Attuned Spectral Shield

The shield can be upgraded once the players have the Hell’s Retriever:

  1. Spin the Mystery Box until a padlock comes out in place of a weapon.
  2. Quickly raise the Spectral Shield and drain the padlock with the Warden’s Key until its keyhole turns blue.
  3. Throw the Hell’s Retriever at the padlock to collect it. Several players can throw at it together to upgrade every shield.

The padlock then hangs on the front of the Attuned Spectral Shield, which takes more damage before it breaks and holds four Spirit Blasts instead of two.

In the First Room

Doors closed, none of this is reachable. Both power switches, every part of the shield and every workbench are behind the doors of Model Industries, so a First Room game is played without the Spectral Shield and without the Pack-a-Punch.