Compared to Liberty Falls and Terminus, Citadelle des Morts may seem daunting at first, with its multitude of objects to collect. But fear not; with the right guidance, this challenging venture can become a manageable task.
If you’re ready to conquer the Citadelle des Morts Main Quest Easter Egg, here’s your roadmap to victory inBlack Ops 6 Zombies.

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How to complete Citadelle des Morts Main Quest in BO6 Zombies
The first phase of the Citadelle des Morts Main Quest should be easy, as the game provides you with a guided mission. However, it doesn’t tell you thatyou must speak to Krafft, who will be in the room behind the Quick Revive machine.
It’s crucial to do this step and unlock the Pack-a-Punch machine since they’re prerequisites for the later tasks. To knock out the prerequisite quests, here’s what you need to do:

As long as you follow the star waypoints, you should achieve the initial phase within the first six rounds (less if you’re lucky). Then, you’ll move on to the most essential part of the quest:obtain all mission items and the elemental swords to trigger the boss fight. Unlike the first phase, most objects can be picked up in any order. You can even grab multiple items in a single round if you leave a few zombies alive. On the other hand, the Mystic Orb and Guardian Key will need to be saved for last. For a quick overview, check out this list of essential items you need to completeBO6 Zombies’Citadelle des Morts Main Quest:
To save you the most time, I recommend collecting the Ritual Items and elemental swords simultaneously. You can also work on the Incantations and the Page Fragments challenge when you can. It’s easier said than done, but I’ll go more in-detail about each mission item.

How to get Page Fragments and complete Trap puzzle in BO6 Zombies
You can start on the Page Fragments task after speaking to Krafft. They’ll appear in theSitting Room(the same place as Stamin-Up). There are 12 potential spots you can search for in this room:
Look around for the pages, which will be marked with a red symbol. These symbols correlate to a puzzle deep in the Undercroft.

Once you’ve obtained four Page Fragments,head to the Undercroft(lower level with Pack-a-Punch and Quick Revive).Punch the wall that has a blue lightshining from it, using the Melee Macchiato Perk.
You’ll see various symbols that must be shot in a specific order. To find out the right combination,go to the Tavern near spawn, and look for Potion Vialsin these locations:

Interact with each Potion Vial to produce a unique symbol on the bottle. It’ll be different each playthrough, so try to mark it down in the correct order.
Return to the Undercroft and shoot the same symbolswith the right combination. Keep in mind that the blocks will shift around every time you shoot one. It’ll make things more challenging, so you may want to use Aether Shroud or the Idle EyesGobbleGumto make yourself invisible to zombies temporarily.

If you’ve completed the puzzle successfully, a hidden part of the wall will appear.Place down the Page Fragments in the book. You’ll see a symbol with one eye, one eye with eyelashes, eye with eight spikes (looks like a sun), and an eye with four spikes. The symbols will mix and match every playthrough, but the page order will remain the same. Here’s what order you can note down:
You can also use this image as a guide (my symbols will probably be different from yours):

Find these symbols on Point of Power Traps and activate them in order. They’ll have an outline of each Page Fragment symbol on them, indicating that they can be used for the book puzzle. you’re able to ignore the ones that have a circular outline around the trap, as they will not be tied to the puzzle.
Activate the trap and stick around its radius until you farm enough zombie kills (usually goes up to 1,600 points). Since the traps require money, I like using this time to collect the elemental swords and Ritual items to get more cash. Complete all four traps and Krafft will notify you when you’ve done things correctly.

How to unlock all elemental swords in BO6 Zombies
You can start crafting the elemental swords byRound 10, where you can pick upa Stampfrom a zombie with bucket/knights helmet. Use the Stamp and approach one of the knight statues in the same room as the Vulture Aid Perk (F1 coordinates).
You’ll recieve the base version, also known as “Bastard,” for the elemental sword first. To upgrade each sword inBO6 Zombies, complete these steps:

The Raven Sword is a bit more complicated than the others, so here’s what you can expect for each Antiquity:
After you’ve collected each sword, you can attach Incantation buffs to them using the Ritual items.

All Ritual Item locations in BO6 Zombies
You can get all the Ritual Items fairly quickly if you’ve unlocked most of the main doorways on the map. However, be warned that quitting and saving can cause it to disappear. Therefore, you may want to do this step in one go.
The Ritual Items can be used to make Incantations for the swords. Search for yellow circles around the map to place them down, and upgrade it by eliminating a certain amount of zombies near it.
When you farm enough zombies, a chest will appear. Equip the corresponding sword and melee the box to pick up the Incantation inside. Here’s where you can find them:
Every time you pick up the Incantation, a new chest can be found in the Knights room. That way, you don’t have to travel so far to claim them again. It’ll also come in handy for the Mystic Orb task, one of the last steps ofBO6 Zombies‘ Citadelle des Morts Main Quest.
How to unlock Mystic Orb in BO6 Zombies
To unlock the Mystic Orb inBO6 Zombies, you need to complete the previous steps involving the Page Fragments, elemental swords, Ritual Items, and Incantations. After completing these objectives, you’ll find a new piece ofartwork displaying the sword iconsin thehallway to the Undercroft. It’ll be near the Sitting Room with Stamin-Up. Keep in mind that the order changes every playthrough, so mine will look different from yours:
Note down the order you have andgo to the Knights room. Perform the following steps:
Remember to use the Incantation boxes in the Knights room to reduce the need for travel. It’ll appear there after you’ve sliced the chest from the Ritual Item circles.
You’ll know when you’ve done things correctly when the statue produces a yellow glow.
Continue to do this step until all four statues illuminate. In return, the Mystic Orb will spawn at the center.
How to get Guardian Key in BO6 Zombies
You mustuse the Mystic Orb and participate in four sword trials to get the Guardian Key. To start the trials, you must place the orbs around the same area as the Ritual Item upgrades. Go to these places (do this in any order):
Once you’ve placed the Mystic Orb, you mustuse the corresponding elementduring the challenge. So, if you are participating in the Dragon Sword challenge, you’ll need to get fire kills using the designated sword, the Incantation, or any other explosive devices. It works the same as the Ritual Item Incantation step, farming souls from zombie kills.
The Lion Sword challenge is the only exception, as this one doesn’t require you to use its distinct element. Instead, you’ll need to stand in thespawned green orbsand wait until a smaller orb spouts out of it. Fill up the Mystic Orb with these orbs (souls) and pick it up once it’s ready.
Ensure to fill up the Mystic Orb four times andreturn to the area with the sword order artworkat D1 coordinates.Interact with the wall to place the Mystic Orb, thus providing you with the Guardian Key. If you’re still having trouble finding any of the orb locations, I’ll show you where to place each of them:
Dragon Sword trial location
Lion Sword trial location
Raven Sword trial location
Stag Sword trial location
How to defeat Citadelle des Morts final boss in BO6 Zombies
Before you start the Final Encounter, it’s crucial to make some preparations.Acquire as many useful Perk Colasas you can, including Jugger-Nog, Quick Revive, Speed Cola, Deadshot Daquiri, and Stamin-Up. It’s also an excellent idea toPack-a-Punch your weapon to Level 3 and get it to Legendary raritywith the Arsenal machine.
Weapons, like theRay Gun andMustang and Sallybuild, are pretty good picks for the upcoming fight. I also suggest bringing along anything that makes you invisible to zombies temporarily. This includes theIdle Eyes GobbleGum and the Aether Shroud. It’ll help you get the zombies off your back, so you may focus on the enemy ahead. Additionally,Mutant Injectioncan be a game-changer for the boss’ last stage.
When you’re ready to begin the boss fight,go to the statue at spawnand approach it to place the Guardian key.
The Citadelle des Morts boss fight features three phases:
Defeating the Guardian boss inBO6 Zombiesgrants you 5,000 XP, the Jackknife Operator Skin, and Calling Card. It’ll also give you an exclusive cutscene, similar toMaya’s secret storylinewith theMorse code puzzle.