Die Maschine:
Seal the Deal

Seal the Deal, the main Easter egg of Die Maschine, step by step: the Aetherscope, Vogel's diary, Der Wechsler, the Decontamination Agent in the Yard tank, Orlov and the boss fight in the cyclotron.

4 min di lettura
9 capitoli
aggiornato 2026-10-29

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Before starting

The framed photograph of Orlov's wife and daughter, dusty and cracked, Die Maschine, Call of Duty Black Ops Cold War Zombies

Seal the Deal, called Evil Unleashed in the game, is the main quest of Die Maschine. Requiem sends its strike team to close the rift the Omega Group opened at Projekt Endstation. It needs the power, the Pack-a-Punch and the D.I.E. Machine with its four variants; the Electrobolt and the Thermophasic only unlock during the quest, after the Spectral Reflections of step 2.

Step 1: the Aetherscope

After the Pack-a-Punch is built, a new rift opens. In the Dark Aether behind it, the three parts of the Aetherscope, an antenna, a middle section and a bottom section, wait in three places; guides disagree on whether each part always has the same place. Each part picked up calls a pack of Plaguehounds. If the timer runs out first, the rift comes back a little later.

In the Yard

Under the stairs by the workbench; Fandom places the antenna here.

At the Crash Site

On the wreck of the plane.

In the Particle Accelerator

On the floor of the accelerator room.

The Aetherscope is built on its own crafting table, on the bottom floor of the Particle Accelerator, behind the Pack-a-Punch. When a player picks it up, Weaver passes on the new orders of the Director of Requiem: shut the cyclotron down for good.

The finished Aetherscope

A portable scanner that reveals the Spectral Reflections, echoes of past events in the Dark Aether.

Step 2: Doctor Vogel’s diary

A rift opens in the Medical Bay. Before entering, try the terminal there: it asks for a password.
In the Dark Aether, take the diary of Ulrich Vogel, the director of Projekt Endstation, from the table by the terminal.
A Spectral Reflection of Vogel appears on the bottom floor, near the sink. Interact once to show him, a second time to give him the diary; he reads an entry. While anyone is in the Dark Aether, Mayak, the Megaton Overlord, starts to spawn.
Vogel then appears twice more: in the Control Room, between the reward outputs of the Trials, and by the Aetherscope table. After the third entry, the terminal of Der Wechsler can be unlocked.

Step 3: powering Der Wechsler

Der Wechsler, the decontamination chamber of the Medical Bay, is online but lacks power. Facing the Speed Cola machine, shoot the right leg of the tank with the Electrobolt and the left one with the Cryo-Emitter; on the other side, the right leg with the NOVA-5 and the left with the Thermophasic. The start-up goes on, until a new fault: the Decontamination Agent is missing.

Step 4: the Decontamination Agent

A rift opens between the Medical Bay and the Particle Accelerator. Inside, an anomaly shows two Soviet soldiers, Dmitriyev and Kalashnik, who stole the golden agent, taking Der Wechsler for a Nazi gas chamber.
Back in the normal map, a Dark Aether Wrench lies where the anomaly was.
Use the wrench on the broken tank of the Yard three times. A zombie pops the hatch open but cannot get out: kill it.
Throw an explosive lethal into the open hatch. The tank fires, knocks down a tree and the agent falls.
Carry the agent back to Der Wechsler. While holding it, the player can neither shoot nor melee, and more Plaguehounds come.

The broken tank

The wreck in the Yard, the only step of the quest in the First Room.

Step 5: Orlov

The split Megatons were Omega Group scientists. Lead a Megaton Bomber and a Megaton Blaster under Der Wechsler: the first is sucked into the tank and held until the second joins it. Then every player gathers in the Observation Room of the Medical Bay and starts the decontamination at the terminal. The room locks down, every zombie on the map dies, and the two halves merge back into a man, Orlov. He breaks out at once, the room opens and Plaguehounds attack.

Der Wechsler

The tank where the two halves of the Megaton become Orlov again.

Step 6: the photograph

A last rift opens in the Living Room. In the Dark Aether, by the 1911 wall weapon, a reflection shows Orlov speaking to a photo of his wife Sanya and his daughter Katja, hoping the machine will not change the world. Back in the normal map, the photograph lies where he stood. Picking it up takes every player to the cyclotron, where a calmer Orlov waits.

Step 7: the boss fight

Orlov turns on the Omega Group and offers to help Requiem shut the machine down. He switches off three systems of the cyclotron, one after the other, while Mayak, Megaton Bombers and Blasters, Plaguehounds, zombies and Heavy Zombies attack. Only the zombies and Heavy Zombies go for Orlov; everything else hunts the players.

After the third system, Orlov tells the team to leave and stays behind. Weaver calls the exfil: pillars of blue energy rise across the map, 25 damage per tick to cross and a down in their centre, and the players have the usual 1 minute 30 to reach Raptor One.

Raptor One landed in a clearing of Die Maschine, waiting for the strike team, Die Maschine, Call of Duty Black Ops Cold War Zombies

The exfil

The helicopter lands and waits for the strike team, with fewer zombies than in a normal exfil.

Rewards

Boarding the helicopter plays the ending: Projekt Endstation is destroyed behind the team. The first completion gives 5,000 XP and the Evil Unleashed calling card, and the Seal the Deal achievement unlocks after the cinematic.

The Projekt Endstation facility blowing up in a column of light as the helicopter flies away over the mountains, Die Maschine, Call of Duty Black Ops Cold War Zombies

The end of Projekt Endstation

The facility goes up in a column of light as the helicopter flies away.