Look, the Citadelle Des Morts Easter egg is a mess if you don't know exactly which antiquity you're holding. You’ve probably spent twenty minutes running around the Tavern Cellar, rotating those rings like a madman, only to have the orbs fail to spawn. It’s frustrating. I get it. The thing is, there isn't one single BO6 Raven Sword code that works for everyone every time. It’s randomized. Well, "randomized" within a very specific set of five possible combinations.
Basically, the game decides which "Antiquity" item spawns in the Alchemical Lab at the start of your match. Once you grab that item and bring it to the basement of the Tavern (the Town Square area), that item dictates your code. If you try to brute force it without checking your item first, you’re just wasting ammo and time while the rounds get harder and harder.
How to find your specific BO6 Raven Sword code
First off, you need the Raven Knight’s Bastard Sword. You get this after round 10 by killing those "bucket head" armored zombies and taking their stamps to the statues in the knight room. Once you have that, head to the Alchemical Lab. This is near the knight room, often on a bookshelf or a table. You’re looking for a physical object you can pick up.
What did you find? This is the most important question.
If you have the Raven Skulls (it looks like two bird skulls joined together), your code is Air and Gemini. You’ll see two rings in the Tavern Cellar. The inner ring handles the elements—look for the triangle pointing up with a horizontal line through it (that’s Air). The outer ring is for the zodiac. You need the Gemini symbol, which looks like the Roman numeral II. Spin them so they both align with the green arrow at the bottom.
Did you find a Lion’s Jawbone instead? That’s the Fire/Leo combo. You want the upward-pointing triangle (Fire) and the Leo zodiac sign (the little squiggle that looks like a 0 with a tail). Again, line them up at the bottom.
The full combination list
Honestly, just keep this list open while you’re playing. It saves so much headache.
- Antiquity: Raven Skulls -> Element: Air (Triangle pointing up with line) + Zodiac: Gemini (II)
- Antiquity: Lion’s Jawbone -> Element: Fire (Triangle pointing up) + Zodiac: Leo (0 with a tail)
- Antiquity: Fossilized Fish -> Element: Water (Triangle pointing down) + Zodiac: Pisces (Two curved lines tied together)
- Antiquity: Fossilized Scorpion -> Element: Water (Triangle pointing down) + Zodiac: Scorpio (The letter M with a pointed tail)
- Antiquity: Ram’s Horn -> Element: Fire (Triangle pointing up) + Zodiac: Aries (The V-shape with curved tops)
There’s a rare chance you might find a "Symboless Rock" or "Antlers." If you get the Antlers, users have reported success with Earth and Capricorn. If you get the weird symboless rock, try Air and Libra or Air and Sagittarius.
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Why the code matters for the Balmung upgrade
Once you align those symbols at the bottom of the dial and insert your sword, purple orbs will fly out. This is where it gets chaotic. You have to lead these orbs into the black holes (Shadow Rifts) that appear on the floor.
The orbs actually hurt you if they touch you directly, so you've gotta "kite" them. Lead them over the holes three times. Each time you fill a hole, it moves. Usually, it stays within the Tavern area, but it might move upstairs. Once the orbs are sucked in, go back to the wheel in the cellar. Interact with it, and the game will finally give you the Balmung, also known as the Raven’s Shadow Sword.
This isn't just a regular melee weapon. The Balmung is arguably the best wonder weapon on Citadelle Des Morts for high rounds. When it's charged (you'll hear a literal crow caw), your regular attacks can trigger a shadow rift that sucks zombies into the sky. But the real "cheese" is the parry. You can parry the boss's attacks, take zero damage, and keep your armor intact. It makes the final Easter egg fight significantly easier.
Common mistakes people make in the Tavern Cellar
Most players make the mistake of looking at the top of the wheel. Don't do that. The "pointer" or the active zone for the BO6 Raven Sword code is the green arrow at the very bottom, right above where the sword slot is. If you align your symbols at the 12 o'clock position, nothing will happen.
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Another thing: if you enter the code wrong, you'll summon a wave of elite enemies. It's a penalty. If you're already on round 25 and you're struggling to survive, the last thing you want is three Manglers and an Amalgam spawning in a cramped basement because you forgot that the Scorpion belongs to Water, not Earth.
Double-check the symbols. The elemental triangles are very similar.
- Fire: Upward triangle.
- Air: Upward triangle with a line.
- Water: Downward triangle.
- Earth: Downward triangle with a line.
Most of the Raven Sword antiquities use Air, Fire, or Water. Earth is rarely the answer for this specific sword, though it pops up for other upgrades.
Actionable Next Steps
To get this done efficiently, follow this exact workflow in your next match:
- Reach round 10 and kill the armored "bucket head" zombies to get the Bastard Sword.
- Immediately run to the Alchemical Lab and identify your Antiquity (look for the Skulls, Jaw, Fish, Scorpion, or Horn).
- Head to the Tavern Cellar and input the matching Element/Zodiac pair from the list above at the bottom green arrow.
- Guide the orbs into the rifts and claim your Balmung before the rounds get too high to manage the movement.
- Don't forget to shoot the raven in the sewer later if you want to unlock the full Incantation upgrade for the sword's special abilities.