Black Ops 6 Zombies: How to solve the Easter Egg in Citadelle des Morts

In CoD: Black Ops 6 you can complete the main mission on the map “Citadel of the Dead” to unlock rewards. This mission, also known as an Easter Egg, is not explained and you have to figure out the individual steps yourself. To save you the stress, we will show you how to complete the Easter Egg of Citadel of the Dead.

What do I need to know before the Easter Egg? The Easter Egg of Citadel of the Dead is even more complex and time-consuming than the one from Terminus. However, the main mission can be completed solo without problems; if you want a stress-free experience with some time savings, it is recommended to start with a group.

We will now go through all the steps of the Easter Egg, let you know what you need to do, and provide important tips that you should be aware of. We will also show you the rewards that you can earn. The following steps are crucial for the Easter Egg:

• Preparation: What should I consider before starting?
• Step 1: Gain access to the castle and activate the Pack-a-Punch
• Step 2: Talk to Krafft
• Step 3: Build the four knight swords
  • Important information about the Wonder Weapons
    • Solais (Lightsaber)
    • Durendal (Electric Sword)
    • Caliburn (Fire Sword)
    • Balmung (Shadow Sword)
• Step 4: Build the ritual objects
  • Important information about the ritual objects
    • Horseshoe
    • Brooch
    • Raven Claw
    • Ras Anch
• Step 5: Complete the falling puzzle
• Step 6: Activate the knight statues
• Step 7: Fill the Mystic Sphere with souls
• Step 8: Defeat the Guardian
  • Rewards for the Easter Egg of Citadel of the Dead

With our directory, you can quickly jump to the individual steps and get an overview:

Preparation: What should I consider before starting?

Before you start a run for the Easter Egg, you should consider the following gear, weapons, and things:

• Your weapons should have silencers – Especially with the GS45
  • Why? Because weapons with silencers increase the drops for scrap
• The following gums should be packed into your collection, if you have them:
  • Who counts the points?
  • Profit Sharing (If you are in a team)
  • On the house paired with Fizz Fountain
  • Wonderful
  • Secret Power
  • Extrastrong
• Get smoke bombs in your loadout to escape from the zombies
• Set up some builds of your favorite weapons that can also be bought off the walls on a zombie loadout
  • Why? So that when you pick up the weapon, you get the attachments you used in your build

Step 1: Gain access to the castle and activate Pack-a-Punch

To start the Easter Egg, you must gain access to the castle and activate Pack-a-Punch. So gather enough essence and from the marketplace either take the right or left path to the castle. The direction does not matter, as you should open all doors for the Easter Egg anyway.

Once you reach the main gate, you will discover the locked gates of the castle. You now need to shoot these with the lion cannon located on the castle wall. So buy your way to the castle wall and turn the wheel on the right side of the cannon to aim the weapon at the gates. You fire a shot by interacting with the back of the cannon.

The activated shot will blow away the wooden gates, allowing you to advance further into the castle. Buy your way deeper into the castle until you reach the dungeon room. In this room, you will find a blue box from the syndicate, which is locked with three locks – Shoot these off.

A blood-red portal will emerge from the box, where a double ghast will spawn, which you must defeat now. He is weaker than an amalgam but more agile. Try to run your rounds in the basement while shooting at the double ghast during your movements. Once defeated, he will drop the blood etherium crystal, which you need to place into the portal.

After you have placed the crystal, the portal will close and all that remains is the Pack-a-Punch.

Step 2: Talk to Krafft

Now you need to talk to Krafft, a crazy, eccentric old man in a cell. You will find him in the dungeon in the room with the perk “Quick Revive.” The cell is located in a niche on the left side of the room when you come from the Pack-a-Punch.

Interact with the door to open the hatch so Krafft can communicate with you. He will reveal further information about the Easter Egg and the castle that you should know – additionally, he blesses you with the power of the Dark Aether.

Step 3: Build the Four Knight Sabers

Now comes the first challenging part – crafting the four knight sabers. If you are in a group of four, each of your teammates can build one saber. However, if you are going solo, you will have to forge all the sabers by yourself.

Important Information about the Wonder Weapons

To build a knight saber, you need a stamp, which you obtain from the knight zombies – you can recognize them by their iron helmets. They only spawn starting from round 10. You can only carry one stamp, so pick one up and head to the dining hall where the four knight statues are located.

Activate a statue with your interaction button and collect a sword. Depending on which statue you activate, you will receive the blueprint for the corresponding elemental wonder weapon. In our gallery, we have marked the statues corresponding to the names of the swords as follows:

1. Solais (Light Sword) front right
2. Durendal (Electric Sword) back left
3. Caliburn (Fire Sword) back right
4. Balmung (Shadow Sword) front left

We will now show you how to build the swords step by step.

The swords take up the melee slot in your inventory. You can therefore carry one sword and two additional firearms with this new type of wonder weapon. Additionally, the swords can be placed at the respective knight statues so that you can pick them up again at any time.

Solais (Lightsaber)

The Solais can be forged by cutting a glowing parasite with your sword, thus cloaking your blade in light. Now head to the place “Upper Village” as you walk towards the castle and keep to the right. Past the well, you will see a canopy with a lamp and a lion door on the right. Strike this door with your glowing sword.

Repeat the process three more times to draw all the runes onto the door. Now you can interact with the door to enter a cellar. Defeat the zombies and socket the sword into the holder.

Now you will see four glowing symbols jump out of the holder. You must shoot them all in the correct order. You can recognize the order by the column of the holder. If you succeed, the runes will infuse the sword with holy magic and you can claim Solais as your own.

IMPORTANT: If you take too long with the puzzle, you will be thrown out of the cellar and must survive a round before you can open the door again.

Durendal (Lightning Sword)

To build Durendal, you need three rustic lightning rods, which are scattered across the map at the following locations:

• On an antenna near Speed Cola – Shoot your weapon and the ammo mod “Dead Wire” at the nearby fuse box to bring the component to you.

• In the field path area on the ground next to the Perk-a-Cola “Death Daiquiri”.

• Im Brustkorb eines gepanzerten Zombies, der sich im Verlies befindet – besiegt diesen. (Er spawnt erst gegen Runde 12)

Equipped with all lightning rods, you now go to the right side of the castle wall and insert them into a pot with three cutouts. Now the lightning rods begin to spin and a storm forms in your area. You need to kill zombies in the storm with your sword drawn until your sword is charged with lightning.

Once your sword is charged, you need to strike the pot once to charge a lightning rod with your energy. You repeat this two more times. Once all lightning rods are charged, you need to socket your sword so that it can be transformed. After a short wait, you can pull Durendal from the socket.

IMPORTANT: Don’t take too long when you want to strike the pot with your charged sword, or the energy will dissipate and you will take damage.

Caliburn (Fire Sword)

To build the Caliburn, you must go to the castle entrance hall and place your sword in the slot in front of the dragon statue located on the stairs. Above the statue, you will find a stone depiction of the map, where three points will light up.

These points mark fire pits on the map that you need to activate. You must visit the following locations:

• On the castle wall on the left side
• In the marketplace near the Riot Starter
• On the dirt road near a bicycle

Now go to a cauldron, interact with it, and steal the fire from it. You are now on fire and will take damage over time temporarily. Your task is to bring your flame effect to the dragon statue to infuse the sword with flames. To avoid going down, you can kill zombies with one hit to regenerate your health.

Once you have delivered all the flame balls to the statue, the dragon will engulf the sword in flames, and you can now pull the Caliburn from its pedestal.

Balmung (Shadow Sword)

To forge Balmung, you need an old relic that you can find in the secret room on the left side of the dining hall. This is a remnant of a dead animal. The following can spawn:

• A Horn
• A Jaw
• A Bird
• A Scorpion
• A Fish

Take the relic and now go to the cellar of the tavern in the marketplace. There, you will see a round construct on the southwestern wall – insert your relic there.

Now symbols of zodiac signs will appear on the outer ring and four more signs inside. You must now crack the correct combination by rotating the two discs according to the relic. You can find all solutions here:

If you have entered the correct combination, you can now socket the blank. Now you need to seal three Shadow Portals. The first is located right by the basement of the tavern. The second on the ground floor in front of the counter, the third one floor up near the pool table.

Now Shadow Balls appear from the construct that will chase you. Lead these to the first Shadow Portal. Three Shadow Balls are enough for you to activate the second portal. Repeat this with the last portals to then go back to the basement.

Interact now with the construct so that your blank is shrouded in shadows. Now you can pick up Balmun.

Step 4: Build the Ritual Objects

As the next step, you need the ritual objects. For each sword, there is a scroll corresponding to its element. But to build them, you need relics of the knights, which are well hidden.

Important Information about the Ritual Objects

The ritual objects take up your grenade slot when built. They have effects and can set enemies on fire, electrify them, send them into a black hole, or heal you. Especially in the final phase of the Easter Egg, these relics are very useful. We will now show you how to get the scrolls.

Horseshoe

Go from the spawn towards the “Path of Nature” up to the stable where the Perk-a-Cola “Deadshot Daiquiri” is stationed. At the exit in the northwestern direction, you will find a horseshoe on the wall above the archway in the stable. Shoot to bring it down.

Now go to the lion cannon on the castle wall and propel yourself with a shot to the marketplace – you will be struck by lightning in the air. Your horseshoe is now gone, and you have to look for it in the spawn. Look in the sky either in the southeast or northwest direction. You should see dark clouds where lightning is striking.

Go to the lightning and collect the item “Pegasus Horseshoe” from the ground. Now go again to the marketplace and stop at the gate leading to the Path of Nature. In front of the gate on the left side, you will find a golden symbol – interact with it to place the horseshoe.

Now many zombies will appear that you need to take care of. Kill them until a golden chest spawns from the ground. Hit the chest with the energy sword to open it and take the Electric Summoning.

Brooch

Go to the dining hall and head towards the Perk-a-Cola “Vulture Aid”; you will notice a red light on the wall. Shoot this to generate a beam of light. You now need to redirect this beam of light to 4 more lights located in the dining hall and in the secret relic room.

Once you have redirected the light to all the lights, it will shine on the chest of a bust. Now the Paladin’s brooch appears. Take it, return to the dining hall, and place the brooch on the golden symbol on the floor to the right of the entrance that leads to the main hall.

Now defeat the zombies that appear in large groups and charge the brooch until a small golden chest rises from the ground. Open it with a strike of the lightsaber. Now you have the Light Summoning.

Raven’s Claw

To find the Raven’s Claw, you need to activate the slide in the Pack-a-Punch room. Slide down the tunnel until you see a raven at the end of the tunnel. Scare it off with a shot. Now sprint up the stairs to the marketplace and look up to the sky. Shoot the same raven in the air so that the Raven’s Claw falls down.

Take the Raven’s Claw and return to the castle underground. Place the claw in the middle of the room and collect souls again through zombie kills.

Once you have collected enough, you can open the new chest with a strike of the shadow sword. Now you can pick up the Dark Summoning.

Ras Anch

You can obtain Ras Anch by spawning a special Double Ghast. For this, it is best to have three Molotov cocktails. Go to the castle wall and light three bonfires for this – the order does not matter. They are located at the following places:

• On the roof above the Perk-a-Cola “Elemental Soda”

• On the roof of the castle entrance gate

• Above the Perk-a-Cola “Speed Cola” on a cliff

Ignite the points to spawn the Double Ghast. This and other zombies will now chase you. Defeat the Double Ghast, pick up Ras Anch, and place it on the last golden symbol in front of the castle.

Collect enough souls again and then open the chest with the Flame Sword. Now you can take the Fire Summoning from the chest.

Step 5: Complete the Trap Puzzle

The trap puzzle is divided into three parts:

• the keypad
• the book pages
• activating the traps

You can approach the steps without the keypad and the book pages, but we wouldn’t recommend it. The correct order also matters here. We will now show you each step in detail.

The Keypad

To solve the trap puzzle, you first need the Perk-a-Cola “Metzel-Macchiato.” Then head to the back dungeon room where you last placed the Raven Claw and punch the suspicious-looking wall on the left side. You will now discover an ancient keypad with runes.

Now, you need to shoot 6 runes in the correct order. You get these from the black jugs in the tavern. Interact with them to reveal their symbol – they are also numbered to help you keep track of the order. It’s best to take a picture or write down all symbols and then go back to the keypad.

If you have entered the correct combination, a red glowing orb next to the keypad will reveal the wall to disclose an old book. However, it is missing the pages that you now need.

The Book Pages

Now that you know which traps you need to approach in which order, you need the missing book pages. You can find them scattered around the living room. In total, you have to collect 4 pages. The pages may be on the sofa, on the tables, near the castle walls, or on the floor.

Their locations are unfortunately always random, so you should ideally always leave a zombie alive during your search, so you can scout the surroundings more comfortably. The pages usually glow red, which can make your search easier.

Activating the Traps

The last step is activating the traps in the correct order. Take your four collected pages and bring them to the back dungeon room to insert them into the mystical book that you uncovered at the keypad.

The order is:

• Symbol 1: Page from the top left
• Symbol 2: Page from the bottom left
• Symbol 3: Page from the top right
• Symbol 4: Page from the bottom right

Remember the order and now search for the correct traps. There are 4 variations of them:

• Eye in the Ring
• Eye with Eyelashes
• Eye with Four Spikes
• Eye with Eight Spikes

To activate them, you need to spend 1600 essence. Afterwards, a small area around the ground plate will light up. Now you need to stand in the red area and kill enough zombies. Once you have defeated the desired amount, the plate will extinguish, and you can move on to the next plate.

IMPORTANT: If you do not kill a number of zombies in time, the plate will deactivate, and you must wait until your cooldown has expired before you can recharge it again. Also, note that the zombies do not need to be in the aura’s vicinity for the kills to count, only you need to stand inside.

Step 6: Activate the Knight Statues

Once you have completed all the steps, you can activate the statues and pay your respects. Go to the vaulted staircase and remember the order of the knight symbols. The numbers will help you.

Now you need to take the knight’s sword and its summoning. Cast the spell on the statue and then inspect your sword for a short animation. If you follow the order, the respective knight will return your greeting, move, and then glow brightly.

Repeat this with the non-glowing knights in the correct order. Meanwhile, the knights will focus a beam of light at the center of the dining hall, allowing the item “Mystical Sphere” to spawn. Now you need to fill the sphere with souls.

Step 7: Fill the Mystical Sphere with Souls

Once you have the Mystical Sphere, you need to take it to four locations, socket it there, and then charge it. Each location corresponds to an element of the knights. It is important that you have the appropriate knight element depending on the location. Here are the locations and what you need to do:

• Location: Second floor in the dining hall, opposite the Perk-a-Cola “Vulture Aid”
• Element: Lightsaber, Light Summon
• How do I charge them? Collect the green glowing spheres in the dining hall

• Location: At the marketplace near the horseshoe seal
• Element: Lightning Sword, Lightning Summon
• How do I charge them? Kill enemies with the ultimate of your sword or summon

• Location: In the open field in front of the castle entrance near a trap
• Element: Fire Sword, Fire Summon
• How do I charge them? Kill enemies with the ultimate of your sword or summon

• Location: In the back dungeon room near the raven seal
• Element: Shadow Sword, Shadow Summon
• How do I charge them? Kill enemies with the ultimate of your sword or summon

If you have managed to manifest all the elements in the Mystic Sphere, you now need to deliver them to the right place.

Step 8: Use the Mystic Orb and collect the Watcher’s Key

Take your charged Mystic Orb and bring it to the wall that told you the order of the knight greetings. Here you can use it. Afterwards, a hidden room will open with a remnant and the glowing item “Watcher’s Key”. Take this and bring it to the marketplace.

The Point of No Return

To initiate the last step of the Easter egg, you must place the Watcher’s Key at the base of the statue that stands in the marketplace. However, before you begin the fight, you should have made preparations. You should:

• consumed the most important perks,
• punched and upgraded your weapons to the maximum level,
• collected strong gums
• and acquired the best armor vest.

If you are absolutely sure that you want to face the boss fight, you can now use the Watcher’s Key. The statue awakens to life after a short animation and then challenges you.

Step 9: Defeat the Guardian

Although the Guardian seems quite brutal and intimidating, he is one of the easier bosses. The boss has three phases, and the further you progress, the more aggressive the statue becomes. Your task now is to tear off his armor to attack the vulnerable spots of his outer shell.

Fire at his shoulders, arms, legs, and knees. Focus on one point to break the armor efficiently. Once you have caused enough damage, the vulnerable point of his body will be exposed, allowing you to deal real damage.

After you have drained enough health from him, the Guardian will pause his fight and gather in the middle of the arena. During this time, he is immune to damage, and you will have to fight against a wave of zombies. Once this is finished, you will receive maximum ammunition and can continue to fight the boss.

Having survived three phases and destroyed his health bar, the fight ends and the Easter egg is over. Afterwards, a cutscene follows and you will have the choice to either finish your round or continue.

Rewards for the Easter Egg of Citadelle des Morts

Those who complete the Easter Egg will receive the following rewards:

• Operator skin “Knife” for Weaver
• 5,000 XP
• A calling card

If you complete the Easter Egg before the launch of the “Guided Mode,” you will receive an alternative version of the banner with a golden skull. This is meant to show other players that you were one of the first to complete the Easter Egg before it was simplified.

The Easter Egg of Citadelle des Morts is challenging, especially for solo players. It is worth teaming up with others you can communicate with. Are you looking for more tips for Zombies to survive more rounds? Then we have just what you need: CoD Black Ops 6 Zombies: 15 tips for beginners on how to survive more rounds