How to Solve Serum Puzzle in Ashes of the Damned in BO7 Zombies

Unlock the secrets of Black Ops 7 Zombies with our definitive guide to conquering the Serum Puzzle in Ashes of the Damned. This complex quest is your gateway to completing the main easter egg and securing the powerful DG-2 upgrade for Ol' Tessie. We break down the entire process, from locating every elusive Serum part to solving the final cipher challenge in Yuri's Lab.

Your Blueprint for Serum Part Collection

Before tackling the puzzle, you must gather six unique components scattered across the map. Here is your essential checklist.1. Powder of the Forgotten

• Prerequisites: Necrofluid Gauntlet (Wonder Weapon) and the Wisp Tea perk.
• Acquisition: Use your Wisp Tea ability to shatter the hidden mirror inside the Tailor Shop in Ashwood. Return with the Necrofluid Gauntlet and shoot the broken mirror to claim the powder.

2. Widow's Lantern

• Location Start: Retrieve the Jar of Spores from the kitchen cabinet in the Blackwater Lake cabin.
• Growth Process: Take the jar to the mushroom-infested dead horse outside Vandorn Farm. After interacting, survive three full rounds to harvest the fully-grown Widow's Lantern.

3. Mysterious Limb

• Source: This part is a rare drop from Zursa, the zombie bear elite that spawns from Round 16.
• Key Tip: You must deliver the final blow to Zursa using the Abomination Head's Beam Attack from an upgraded Ol' Tessie to force the item drop.

4. Ravager Eyes

• Method: Lure a Ravager enemy to an active Saw Blade trap (found at locations like Vandorn Farm Barn).
• Execution: Let the trap eliminate the Ravager to make the Ravager Eyes available for pickup.

Donate: buy me a coffee

5. Hoard Husk Chunks

• Requirement: You must have the Abomination Head upgrade for Ol' Tessie.
• Process: Patrol the roads between areas and use the vehicle's beam attack todestroy randomly spawning purple-glowing plants. Collect the chunks they leave behind.

6. Human Bones

• Location: Inside the Vandorn Farm Barn.
• Steps: Use a Combat Axe to sever the right foot of the hanging corpse. Then,throw a Molotov at the severed foot on the ground. Once the flames diedown, collect the Human Bones.

Solving the Final Serum Puzzle in Yuri's Lab

Once all six parts are secured, head to Yuri's Lab within the ZaryaCosmodrome. The parts will be displayed in bowls, and interacting withthe Powder of the Forgotten will activate the puzzle, displaying threelines of symbols on a chalkboard.

Your goal is to interact with the correct bowls in the exact sequence shown: top symbol first, then middle, then bottom. Use this translation key to identify the correct bowls:

• > Symbol: Human Bones (1st Bowl)
• L Symbol: Hoard Husk Chunks (2nd Bowl)
• C Symbol: Widow's Lantern (3rd Bowl)
• C. Symbol: Ravager Eyes (4th Bowl)
• L. Symbol: Mysterious Limb (6th Bowl)

Surviving the Lockdown and Claiming Your Reward

After entering the correct sequence, the vials will emit a red smoke.Interact with the central vial to contribute your blood, initiating alockdown sequence. Crucial Warning: Your health will not regenerate naturally during this fight.

To survive, use the Necrofluid Gauntlet's primary fire and immediatelyreload to siphon health from defeated zombies. Eliminate all waves tocomplete the Serum Puzzle and cement your victory in the Ashes of theDamned easter egg.

Donate: buy me a coffee

---

Other Articles Related

Best Meta Loadouts in Black Ops 7
Level up your game! Discover the best meta loadouts in Black Ops 7 fordominating multiplayer. Get pro-class setups for ARs, SMGs, Snipers& more.
How to Launch the Cosmodrome Rocket in Ashes of the Damned in BO7 Zombies
Learn the exact steps to launchthe Cosmodrome Rocket in Ashes of the Damned. Complete guide for BlackOps 7 Zombies players to unlock this powerful Wonder Weapon.
Where to Find All Keys in Ashes of the Damned in BO7 Zombies
Struggling to find all keys in Ashes of the Damned? Our guide reveals every keylocation in Black Ops 7 Zombies to unlock doors, chests, and progressthrough the map. Get the complete walkthrough now
How to Solve Serum Puzzle in Ashes of the Damned in BO7 Zombies
Struggling with the Serum Puzzle in Ashes of the Damned? Our guide provides aclear, step-by-step solution to complete the Black Ops 7 Zombies easteregg and secure the powerful Serum reward.
How to Get Free Perks in Ashes of the Damned for BO7 Zombies
Unlock the best secrets! Learn how to get free perks, powerful upgrades, anddominate in Ashes of the Damned for Black Ops 7 Zombies with our expertguide.
How to Get a Free Wisp Tea Perk in Black Ops 7 Zombies
Unlock the free Wisp Tea perk in Black Ops 7 Zombies! Our guide reveals thesimple steps to find the hidden wisps and activate this powerful speedboost for your next match.
How to Complete the Ashes of the Damned Music Easter Egg in Black Ops 7 Zombies
Unlock the Ashes of the Damned song in Black Ops 7 Zombies. Our guide provides a step-by-step walkthrough to find the hidden tombstones, activate thetriggers, and complete this classic music Easter egg.
Best MPC-24 Loadout in Black Ops 7
Unlock the true potential of the MPC-24 in Black Ops 7. Discover the bestattachments, perks, and equipment for the ultimate stealth sniperloadout to dominate your matches.
How to Unlock All Campaign Rewards in Black Ops 7
Unlock all campaign rewards in Black Ops 7! Discover tips, strategies, and secrets to enhance your gaming experience. Join the action now!
How to Get Point Blank Kills in Black Ops 7
Struggling with Point Blank Kills in Black Ops 7? Master close-quarters combatwith our expert tips on loadouts, maps, movement, and strategy to easily complete this camo challenge.
How to Get Celestial Seize in Where Winds Meet
Struggling to master the Celestial Seize in Where Winds Meet? Our guide revealshow to unlock this powerful skill, its combat uses, and the beststrategies to dominate your enemies.
How to Get to Kaifeng in Where Winds Meet
Explore ancient Kaifeng in Where Winds Meet. Discover the best travel routes by road, river, and the new fast travel system to begin your wuxiaadventure in this historic capital.
How to Get Exploration Points in Where Winds Meet
Explore the world & master skills! Learn the best ways to earn ExplorationPoints in the Wuxia adventure game Where Winds Meet for characterprogression.
How to Break Through Level Caps in Where Winds Meet
Explore ancient China in Where Winds Meet and learn proven strategies to breakthrough level caps, unlock new skills, and maximize your character'strue potential.
How To Plant Trees In Anno 117 Pax Romana
Learn the essential steps to successfully plant and manage trees in Anno 117: Pax Romana. Our guide covers finding seeds, using the Orchard, andmaintaining a sustainable wood supply for your growing Roman settlement.