Mortal Shell II Walkthrough — Prisoner's Domain (Four Bosses to the Bottom)
Published 2026-09-177 min read
Full Prisoner's Domain walkthrough for Mortal Shell II: the Sump Culvert and Gallows beacons, the Executioner's Pulpit, the Confessor and the Nameless Prisoner — plus every Tarstone between the gates.
The Prisoner's Domain is a vertical prison built to be died in: four Beacons, four bosses, and a chain of checkpoints that only reward players who cleanse on sight. This route runs the descent in the order the prison allows.

Through the gate
Enter through the gate behind the Silent Gate Beacon and take the main road to the district's mouth. Note the reading material by the crates, climb the stairs, and strike the marked wall to pass — another note waits beyond the drop. Take the device crossing at the left passage's end and loot the Backplate Stone from the stele.
The Sump Culvert
The Sump Culvert Beacon unlocks in the left cave. Cleanse it, ride the device platform, shoot the rope to drop the plank — a Synaptic Vessel waits past it. The upper road ends at another crossing and a chest holding the Bulwark Stone. Clear the area, cleanse the corruption, deliver the Ova, and exit into the pipe road beyond.
The Gallows and the Legion
Shoot the explosive jars to topple the statue outside — climb it onto the wall, where the room holds a Revered Gland and the Gallows Scaffold Beacon unlocks beside the exit. Its corpse holds Common Private Brew; the corridor's switch opens the boss gate.
The Spectral Legion waits inside. Kill it, cleanse, deliver — then climb the Beacon's left stairs into the long ascent, cross the bridge, ride the elevator (shooting its rope on the way, for the loot), and drop from the passage's end to unlock the Executioner's Pulpit Beacon.
The pulpit and the confession
Inside: open the left cell with your weapon, press its switch, clear the opened corridor, break the crates, pull the lever. The chest right of the second room holds the Squall Stone; the left room's switch opens the road back. Cleanse, deliver, cross the device — and the Confessor of Tishna boss waits.
Kill the Confessor for the Confessor's Keepsake. Restock at the pulpit Beacon — a second boss follows — then ride the arena's device up to Ruk for a conversation, grab the Rupturing Stone chest behind him, and drop to the pit's very bottom for the Nameless Prisoner.
The bottom of the world
Kill the Nameless Prisoner for the Captive's Scabstone. The End of Imprisonment Beacon unlocks — cleanse it, carry the Ova home to Marrow Keep, and let the chapter close behind you.
Keep reading: