If you’ve picked up Areciel’s Witch of Strength quest line in Crimson Desert, the Sanctum of Expiation is one of the four sanctums you’ll need to “restore” instead of just clearing enemies. The catch is that you can explore the site any time, but you won’t be able to fix it unless you’ve already spoken to the Witch of Strength and unlocked her request. Once you’re on the right quest, the real puzzle becomes a simple “fetch‑parts‑and‑rebuild” mini‑challenge rather than a confusing brain‑teaser.
Table of Contents
For a broader, official‑style context on how open‑world puzzle‑sanctums and exploration‑driven systems work in modern RPGs, you can refer to the Open world – Wikipedia page Open world – Wikipedia. [web]
The Sanctum of Expiation lies in the northwestern region of Demeniss, and when you approach it through the main north‑facing gap, you’ll see the broken device on a cliffside just outside the ruins. The area is crawling with Antumbra mobs, including flying mages, so you’ll want to clear the interior and the surrounding ledge before you try to interact with the broken machine. Once the sanctum is secure, you’re ready to grab the two missing pieces and restore the device.
How to get the Fusion Reactor and Fusion Core?
The key to the Sanctum of Expiation puzzle is a Fusion Reactor and a Fusion Core that you pull from two specific spots and slot back into the broken device.
- Fusion Reactor (moving cube on the cliff)
After defeating the foes around the broken machine, head to the nearby entrance on the cliffside blocked by vines. Use Blinding Flash to burn the vines, then walk inside. The Fusion Reactor sits on a ledge just outside the opening on the cliff face; you can either climb up or pull it with Axiom Force and store it in your Kuku Pot. - Fusion Core (floating power core near the entrance)
Still inside near the entrance, look up at the ceiling; the Fusion Core floats in mid‑air. Use Axiom Force to grab it directly from the air and stash it in the Kuku Pot as well.
Once both pieces are in your inventory, return to the broken device on the cliffside and place them into the designated slots. The game will automatically snap the components into place when you’re close enough, and the Sanctum of Expiation will be cleansed and fully restored.
Sanctum of Expiation – quick reference table
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FAQs
Q: Can I cleanse the Sanctum of Expiation before meeting the Witch of Strength?
No; you can explore the ruins, but the Sanctum of Expiation won’t restore until you’ve spoken to Areciel, the Witch of Strength, and picked up her quest line.
Q: What are the two items needed to solve the Sanctum of Expiation puzzle?
You need to retrieve the Fusion Reactor from the cliffside ledge and the Fusion Core floating near the entrance, then place both into the broken device outside the sanctum.
