Mortal Shell 2: How to Get the Inflamed Clawstone Tarstone for Burn Damage

The Inflamed Clawstone is an infusion Tarstone in Mortal Shell 2 that sets your primary weapon on fire, adding burn damage to your strikes for 30 Resolve. It slots into a weapon, pairs with the Veteran’s Battle Axe, and can eventually keep the flames burning permanently instead of expiring after a set number of hits.

Quick answer: Travel from the Widow’s Overlook beacon to Blackridge Hamlet, drop down the well into the Holding Cells, grab the Feeding Room Key in the flooded level, then defeat the Rabid Grisha Pack. The stone drops on kill.

What the Inflamed Clawstone does

Once equipped to your primary weapon, the Inflamed Clawstone spends 30 Resolve to coat your blade in fire. Burn then ticks on the enemies you hit. Infusion stones share a slot limit, so you can only have two elemental infusions active at once. You build Resolve back by landing melee strikes, which makes it easy to re-apply the burn during a fight.

Harbinger charging into enemies with a drawn weapon as burn explosions go off nearby — The burn infusion in action, with the fire effect damaging enemies on contact. Image: Cold Symmetry

The stone has four levels, upgraded at the Tarforge in Marrow Keep. Early on the burn wears off after a few strikes, but the final level removes that limit entirely.

Level	Effect
Level 1	Consume 30 Resolve to infuse your weapon with Burn
Level 2	Infusion lasts for 4 strikes
Level 3	Infusion lasts for 8 strikes
Level 4	Infusion is permanent

What you need before the run

The path to the Holding Cells runs through a corruption barrier at Blackridge Pass. To clear it, you need Mother’s Breath, which you receive after delivering 8 ova eggs to Marrow Keep. Without it you cannot push past the corruption to reach Blackridge Hamlet, so handle that step first.

Route to the Inflamed Clawstone

Fast travel to the Widow’s Overlook beacon. From here, head toward Blackridge Pass to begin the approach.

Fallgrim map with several location markers clustered near the starting beacon — The map overview from the Widow’s Overlook beacon, showing the route toward Blackridge. Image: Cold Symmetry

At Blackridge Pass, cleanse the corruption barrier using Mother’s Breath. This opens the way forward into the hamlet.

Move through Blackridge Hamlet toward the windmill area. You can pick up items like the Coin of Mammon along the way as you make for the well.

Character running up a bleak ravine toward a windmill with the combat HUD visible — Pushing through Blackridge Hamlet toward the windmill on the way to the well. Image: Cold Symmetry

Find the well in Blackridge Hamlet and drop down it. This is the entrance to the Holding Cells dungeon.

Open world map with the central player marker as the well entrance is located — A map check before dropping down the well into the Holding Cells. Cold Symmetry.

Inside the Holding Cells, follow the corridors and take the elevator down to the flooded lower level. Clear the enemies waiting in the water.

Armored character with a drawn weapon crossing a ruined wooden scaffold in the flooded dungeon — The flooded lower level of the Holding Cells, where the Feeding Room Key is hidden. Image: Cold Symmetry

Locate the wooden shack in the flooded area and collect the Feeding Room Key from inside. It unlocks the door at the bottom of the well.

Inventory screen with the Feeding Room Key selected and its unlock description shown — The Feeding Room Key in the inventory, needed to reach the boss arena. Image: Cold Symmetry

Use the Feeding Room Key to open the Feeding Room door, take the elevator up, and drop into the arena to trigger the boss encounter.

Defeat the Rabid Grisha Pack. Summons and shell special attacks help against the pack. On victory you receive the Inflamed Clawstone along with the Grisha Remnant.

You will know it worked when the Inflamed Clawstone appears in your inventory and can be slotted into a compatible primary weapon such as the Veteran’s Battle Axe.

Upgrading the stone at the Tarforge

Upgrades happen with Franz at the Tarforge in Marrow Keep, but he can only push the stone past its base level once he has the Etching Needles. That quest item sits in a bone chest just before the Magdalena, the Lady of the Woods fight. When you spot Ruk past the bridge, drop through the opening and turn right before the tunnel to reach the small area holding the chest.

After Franz has the Etching Needles, keep the Inflamed Clawstone equipped and slay enemies to fill its experience bar. Once the bar is full, return to Franz and pay Coin to raise it to the next level. Repeat this until Level 4, where the burn infusion stops expiring and stays active permanently.

Note: The stone advances one tier at a time, so plan to farm enough kills for each level rather than expecting a single jump straight to permanent burn.