Black Ops 7 Zombies Guide: How to Unlock the Agarthan Device Relic

The Agarthan Device is one of Totenreich's Wicked Relics in Call of Duty: Black Ops 7, and it's genuinely one of the more interesting ones to unlock. The process involves teleporting into secret rooms, solving a lab puzzle, and triggering a side easter egg before you even touch the trial itself. This guide breaks down every step, from finding the three required parts to surviving the trial with a loadout that makes the whole thing manageable.

What is the Agarthan Device Relic and how does it work?

The Agarthan Device is classified as a Wicked Relic, meaning it carries a modifier that changes how your Totenreich runs play out. Unlike most Wicked Relics, which hit hard with penalties like double zombie damage or removed Augments, the Agarthan Device does something far less punishing: it randomizes zombie spawn variants each round. One round you're dealing with Normal Zombies, the next it's Frost Zombies, then Acid Zombies. The elemental variety adds some unpredictability, but nothing that a solid loadout can't handle.

This relic can be unlocked on Cursed Mode Tier 2 or higher, starting at Round 15. That's notably earlier than other Wicked Relics, which typically require Round 60. Whether that's an intentional design choice or a bug that hasn't been patched yet is unclear, but for now, Round 15 is your window.

How to get the three parts needed for the Agarthan Device

Before you can activate anything, you need to collect three items: Mr. Peeks, the Soldier Helmet, and the Walkie-Talkie. Two of them come from teleporting out of Tyr's Head, and the third requires a trip through the Group 935 Genetic Lab.

Lighthouse trial defense setup

Finding Mr. Peeks

Head into Tyr's Head by entering from either Tyr's Shoulder or Tyr's Foot. You can enter Tyr's Head twice per round. Use one of the exit tubes, and there's a random chance you'll get teleported into the Liberty Falls hotel instead of a normal exit.

If the hotel room loads in, move fast. Run to the right side of the bed and go prone next to the bedside table. Mr. Peeks is sitting under the bed and can be picked up from there. If you don't land in the hotel on your first try, keep using the tubes on subsequent rounds until it happens.

Finding the Soldier Helmet

The Soldier Helmet uses the same teleport mechanic. Enter Tyr's Head again and use an exit tube. This time you're hoping to land in a small room with dead Requiem crew seated around a table.

Once you're in the Requiem room, head to the shelf on the south wall and go prone in front of the Point Turret. There's a small box on the bottom shelf that contains the helmet. Pick it up and you're done with this part.

Finding the Walkie-Talkie

This one takes more setup. The Walkie-Talkie is inside the Group 935 Genetic Lab, a secret room accessed via ARC-XD.

Here's the sequence, as documented by GameRant:

1. Go to the Core Foundry and head upstairs to the warehouse above the VS Recon Wallbuy.
2. Find the vent in the northwest corner and shoot it open.
3. Drive the ARC-XD down the stairs and across the ramp, then detonate it against the barrels blocking the wall.
4. Return to Fishery Island and look to the left of Pack-a-Punch to enter the Group 935 Genetic Lab.
5. Inside, locate the south corridor with numbers 1 through 5. These map to letters (1=A, 2=B, 3=C, and so on).
6. Find the two numbers marked with a radiation sign and translate them into letters.
7. Match those letters to the heads in jars labelled around the room and pick up the correct two.
8. Place the heads on the machine by the cell to produce a purple gas canister, then place the canister on the creature on the north table to receive the Necrospike.
9. Use the Necrospike to lockpick the cell by angling the pins with the Right Stick.
10. Enter the cell, go prone under the bench, and collect the Walkie-Talkie on the left side.

How to activate the Agarthan Device Relic portal

With all three parts in hand, the next step requires you to be playing as Richtofen (or have a teammate doing so). Head to the Core Foundry on Round 15 or later.

You need Melee Macchiato equipped for this step. Melee the standing barrel to the left of the Mystery Box. The lid opens, and you can interact with it to dig inside and pull out Richtofen's medal.

This triggers the Richtofen Side Easter Egg. Progress through it until you reach Von List, who is seated on a throne. After the conversation ends, approach the throne and interact with it to place Mr. Peeks.

Exit the side easter egg, then head to the Dry Dock. The Agarthan Device Trial entrance is to the right of PhD Flopper. Interact with it to begin.

How to complete the Agarthan Device Relic trial

The trial's core restriction is straightforward but demands respect: zombies can only take damage while indoors. You can't just kite hordes around the map in the open. You need to fight in enclosed spaces.

Based on testing documented by GameRant, the most effective approach uses the following setup:

Once the trial starts, sprint directly to Beacon Island and set up on the second floor of the Lighthouse. Drop Toxic Growth in front of your position to slow incoming zombies, then spam Jotunn Star melee attacks on anything that gets close. The Urticant Major Augment and Ankle Shredder combination keeps zombies slowed and your melee output high.

This same strategy works across all waves. Wave 3 and Wave 6 each spawn HVTs: one Zursa Bear and two Necropincers. Keep using Toxic Growth on cooldown and stay aggressive with Jotunn Star melee. The Lighthouse second floor gives you a natural chokepoint that makes the indoor restriction work in your favor rather than against you.

Is the Agarthan Device Relic worth using?

Short answer: yes, especially compared to the other Wicked Relics available in Totenreich. The alternatives include relics that strip your Augments or give zombies double damage output, both of which directly punish your round performance in ways that compound over time.

The Agarthan Device just shuffles which zombie variants you face each round. Frost Zombies and Acid Zombies carry elemental risks, but nothing that proper perks and a good weapon can't manage. The randomization adds variety without gutting your build.

For a full breakdown of every relic available on the map, the complete Totenreich Relics guide covers all six with unlock conditions and trial tips.

For more Totenreich content, including the Glocke Drop Controller guide and everything else the map has to offer, browse the full Black Ops 7 guides collection.