Mortal Shell 2: Stillblade’s Stone Location and Break Damage Guide

Stillblade’s Stone is one of the more useful Combat Tarstones in Mortal Shell 2 if you fight with a melee weapon and like breaking enemies open before you commit to a big swing. It bolts a unique Light Combo Finisher onto your Primary Weapon, and that finisher deals Break Damage instead of raw health damage. The catch is where it lives: a short beacon dungeon that plenty of players clear and then leave without the reward.

Quick answer: Cleanse the Citadel Annex beacon in the Faded Citadel, ride the giant creature, kill the boss on the far platform, and open the chest on the stone altar before you touch the corrupted core.

Where to find Stillblade’s Stone in Mortal Shell 2

The stone sits inside the Citadel Annex beacon in the Faded Citadel. Getting there means running the Ashen Sanctum stretch that branches off the Gate of Infinity beacon.

Open your map and travel to the Gate of Infinity beacon. From the beacon, head through the bright portal that drops you into the Ashen Sanctum ruins.

Work through the Ashen Sanctum. The route runs along narrow cliffside ledges with gaps you need to jump, then into stone halls holding blue spectral enemies and a cave packed with spiders and egg sacks. A sidearm makes the ledge sections much cleaner, since you can pick off spiders before they crowd you on a narrow path.

The Harbinger climbing a stone staircase into a cavern in the Ashen Sanctum — The Ashen Sanctum route climbs a long stair into the cavern on the way to the Citadel Annex. Image: Cold Symmetry

Past the cave, cross the shallow water toward the glowing beacon at the end of the path. That marker is the Citadel Annex beacon.

Player wading through shallow water toward the glowing Citadel Annex beacon — The shallow water crossing that leads straight to the Citadel Annex beacon. Image: Cold Symmetry

Interact with the beacon to open its menu. Instead of resting and moving on, pick Cleanse Beacon, which drops you into the Hushed Sanctum challenge.

Citadel Annex beacon menu with the enter and cleanse options listed — The Citadel Annex beacon menu, where Cleanse Beacon starts the Hushed Sanctum run. Image: Cold Symmetry

Hushed Sanctum run and the chest you cannot skip

The Hushed Sanctum is linear and short. It is also where most people lose the stone, because sprinting to the corrupted core and cleansing it ends the run and sends you out without opening the chest.

Cross the stone bridge at the start and deal with the rolling enemy that comes at you down the walkway.

Push through the stone tunnel, which mixes hammer-wielding guards with spiders. Take the stairs up into the ruins and clear the pack of spiders waiting near the glowing blue pillar.

Move through the foggy stretch beyond the arena, dodge the giant spectral attack that sweeps the bridge, and climb the long staircase to a circular stone elevator. Step on and let it carry you up into the fog.

A massive multi-limbed creature pulls up at the top. Use the Traverse prompt to climb onto its back and ride it across the abyss.

You land on a stone platform with a tall, multi-armed boss. Kill it to clear the arena.

Head to the chest sitting on the stone altar and open it. Stillblade’s Stone drops here, and you will know it landed when it appears in your Tarstones list as a Level 1 Combat Tarstone with an XP bar reading 0 / 10000.

Open the chest before you interact with the corrupted core. Cleansing the core first and leaving forfeits the stone, and you have to run the whole beacon again for another shot at it.

Stillblade’s Stone effects and Break Damage by level

Slot it into a Primary Weapon and your light attack string gains an extra finisher. That finisher’s whole job is Break Damage, which builds toward forcing an enemy into a vulnerable state you can punish with a Riposte. The Break value climbs as the stone levels.

Level	Light finisher Break Damage
Level 1	10
Level 2	15
Level 3	25

Older listings tier those numbers differently across more levels, so ignore any 10 / 15 / 20 / 25 ladder you still see floating around. The 10 / 15 / 25 scaling above is the current one to plan a build around.

Melee attack landing on a downed enemy after its poise breaks — Break Damage exists to set up the punish: enough of it leaves the target open to a Riposte. Image: Cold Symmetry

One restriction matters for build planning. Zealot’s Stone grants its own Light Combo Finisher, the one that generates Resolve rather than Break Damage, and the game marks it as Tarstone Incompatible while Stillblade’s Stone is filling that role. You get one finisher, so pick based on whether you want stagger pressure or Resolve.

If you want a strong melee build slap these tar stones on absolutely broken
byu/cybrsloth92 inMortalShell

Weapons that can equip Stillblade’s Stone

This is a Combat Tarstone, so it goes on a melee Primary Weapon and does nothing for a sidearm. Only these weapons accept it:

Black Needle
Clockwork Scythe
Great Martyr’s Blade
Obsidian Hammer
The Iconoclast
Veteran’s Battle Axe

How to upgrade Stillblade’s Stone at the Tarforge

Tarstones do not level passively. Each one earns experience only while it is equipped and you are killing things, and it stays at Level 1 until that bar fills and you pay for the upgrade.

Before any of that works, the Tarforge in Marrow Keep needs its upgrade options opened up. That means handing Franz the Etching Needle, a quest item found in a bone chest just before the Magdalena, the Lady of the Woods fight. When you spot Ruk past the bridge, drop down the opening and turn right before the tunnel to reach the small side area holding the chest.

After that, equip Stillblade’s Stone, grind out the XP bar as you explore, and return to Franz to buy the next level with Coin. You can check the progress at any point from the Tarstones menu, which shows each stone’s current level and XP total.

Tarstones menu showing a stone's level and detailed effect breakdown — The Tarstones menu lists each stone’s level and the exact effect at every tier. Image: Cold Symmetry

None of this is needed for the Stoned trophy and achievement, which only asks you to obtain Tarstones rather than level them. Looting Stillblade’s Stone from the Citadel Annex chest already counts toward that total, so you can grab it now and worry about the Break Damage numbers later.