This guide details how to generate and direct light beams in Call of Duty: Black Ops 6 Zombies' Citadelle Des Morts Easter Egg. Successfully completing this step is crucial for obtaining the Light Incantation.
Generating and Directing Light Beams in Citadelle Des Morts
This process involves activating and redirecting light beams from several crystals to reveal the Paladin's Brooch.
1. The First Crystal and Light Beam:

Locate the first crystal in the Dining Hall, on the north wall above Vulture-Aid. Shoot the base of this crystal to deflect the light beam downwards. Then, proceed to the second floor's east side of the Dining Hall and shoot the mirror to deflect the beam left. A successful deflection will illuminate the second crystal.
2. Directing the Second Crystal's Beam:

Direct the now-active beam from the second crystal to a crystal above the Lion Knight. This requires shooting the base of the second crystal from the southwest corner of the Dining Hall's second floor.
3. Directing the Third Crystal's Beam:
Next, redirect the beam from the third crystal into the Alchemical Lab. Position yourself on the north side of the Dining Hall, facing the crystal, and shoot its base.
4. Directing the Fourth Crystal's Beam:

In the Alchemical Lab, redirect the beam from the crystal above the Arsenal Workbench. Stand near the room's exit (on the same side as the crystal) and shoot its base to redirect the beam.
5. Revealing the Paladin's Brooch:
Finally, direct the beam from the last crystal to a table left of the Alchemical Lab's entrance to the Dining Hall. Use a similar position as the previous step, shooting the crystal's base to illuminate the table. This reveals the Paladin's Brooch, allowing progression to the Light Ritual.