The Citadel of Penance sits in the western part of Fainweald in Mortal Shell 2, and its main gate stays sealed until you slot in the missing Citadel Gate Lever. The lever is carried by a miniboss below the fortress, and once you return it to the wall mechanism, the entrance stays open permanently.
Quick answer: Defeat the Bloodcursed Lithopod southeast of the Citadel to get the Citadel Gate Lever, then bring it back to the main gate and interact with the wall mechanism to open it for good.

Where the Citadel Gate Lever drops
The lever was stolen and taken into the ravine below the fortress, and a note posted at the gate points you toward the culprit. That culprit is the Bloodcursed Lithopod, a large stone crab that guards the lever near a body of water.


When the Lithopod dies, it drops the Citadel Gate Lever. Clearing the crab also opens access to the nearby Ravaged Hideout dungeon if you want to explore before heading back.

Note: The Lithopod loves to jump and slam. It can even be killed without a single hit from you. Luring other enemies into it can start an infight, and the crab sometimes launches itself so high that it dies from fall damage. The lever still drops either way.
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You know it worked when the gate mechanism triggers, and the entryway swings open, letting you walk straight into the Citadel courtyard without teleporting.
Alternative entry without the lever
The lever is not the only way inside. A second route on the other side of Fainweald teleports you straight into the fortress, though escaping is harder because you start deep in the prison cells.

Note: A coin pouch inside the arena reads as a “touch” prompt rather than a “pick up” prompt. Grabbing it triggers the Warden boss fight, so only take it when you are ready to commit.
Two ways in, compared
| Method | Requirement | Result |
|---|---|---|
| Citadel Gate Lever | Defeat the Bloodcursed Lithopod southeast of the Citadel | Opens the main gate permanently through the front |
| Wall candle teleport | Interact with the candle near the ruins by the One-Legged Wolf Beacon | Drops you into the prison cells; you fight your way out |
What waits inside the Citadel of Penance
However you get in, a Beacon in the southeast corner of the interior acts as a fast-travel point. Behind the market stalls, a breakable wall hides a Revered Gland used to upgrade your Mether’s Pulse healing flask.
The main reward is the Eredrim shell. Reach the center of the base, defeat the Warden boss in the arena, and interact with the body to claim Eredrim, a tanky new warrior you can inhabit in combat.






