Mortal Shell 2: How to Unlock the Pulse Stone Location

The Pulse Stone turns a Sidearm into a crowd-control tool. Every projectile that lands throws out a shockwave that drags nearby enemies toward the impact point, which bunches up scattered groups before you swing. It sits in a chest in the frozen back half of Winterglass Lake, and you cannot reach it without a key item first.

Quick answer: Pick up the Immaculate Crown in Mornefrost Grave, then return to Winterglass Lake, cross the bell-operated bridge, take the right-hand path past the Grisha Hunters, and open the chest at the top of the stairs the giant stone hand was covering.

What the Pulse Stone does and which Sidearms it fits

Pulse Stone is a Combat Tarstone, so it slots into a Sidearm rather than a melee weapon or your Shell. The base effect reads simply: projectiles generate a shockwave on impact that pulls enemies in. Upgrading the stone widens that pull radius rather than adding damage.

Level	Effect
Level 1	Projectiles generate a shockwave on impact that pulls enemies in
Level 2	Small shockwave on impact
Level 3	Medium shockwave on impact
Level 4	Large shockwave on impact

It is not a universal accessory. The stone only equips to three Sidearms: the Ballistazooka, the Forgotten Crossbow, and the Salvaged Trebuchaxe. If none of those are in your loadout, the Tarstone menu will refuse the slot.

Requirements before you set out

Two things gate the chest. The first is access to the snowy Conquered Temple region, reached through the Corrupted Gate after you have the Outskirts of Mammon area open. The second is the Immaculate Crown, a key item whose description is blunt about its purpose: it unlocks secrets within the ice. Carrying it causes the giant stone hands that block certain paths in the snow to recede on their own.

You also want a ranged Sidearm equipped for the trip, since the bridge into the far side of Winterglass Lake is opened by shooting bells rather than by pulling a lever.

Route to the Winterglass Lake beacon

Travel to the Outskirts of Mammon and cleanse the beacon at Sesters Gate. This anchors your fast travel on the correct side of the region and gives you a short return trip later.

Outskirts of Mammon beacon with the rest prompt highlighted on screen — Resting at the Outskirts of Mammon beacon near Sesters Gate. Image: Cold Symmetry

Head to the Corrupted Gate and pass through it. This drops you into the snowbound stretch of the map where the rest of the route takes place.

Find the Winterglass Lake beacon and cleanse it. The Beacon Found confirmation appears on screen, and from here you can enter the beacon to move deeper into the area.

Cleanse Beacon option highlighted at Winterglass Lake with the Beacon Found notice showing — The Cleanse Beacon prompt and Beacon Found confirmation at Winterglass Lake. Image: Cold Symmetry

Picking up the Immaculate Crown in Mornefrost Grave

Work your way into Mornefrost Grave and follow the icy caverns forward. The layout is narrow and mostly linear, so there is little risk of missing the thread.

Armored character walking through an arched stone doorway inside the frozen caverns — Pushing through the arched passages of Mornefrost Grave. Image: Cold Symmetry

Look for the seated corpse wearing the crown and take the Immaculate Crown from its head. It goes straight into your inventory as a key item, and no equip step is needed.

Note: the crown works passively. You do not activate it, and there is no button prompt when a hand withdraws. Simply having it in your inventory is enough.

Lowering the bridge with the two bells

Return to the Winterglass Lake beacon and approach the broken bridge. If the crossing is still incomplete, two bells need to be struck with a ranged shot.

Shoot the bell on the left side of the bridge, then find the second one positioned on the right, in front of the bridge. Both are tucked out of the obvious sightline, so pan the camera up and around the approach before firing.

Player character crossing a snow-covered cavern route toward the bridge — The snowy cavern approach that leads to the bell-gated bridge. Image: Cold Symmetry

With both bells rung, cross the bridge and enter the cave beyond it. Inside you reach a fork in the path.

Pulse Stone chest location past the stone hand

At the fork, take the right-hand path. A group of Grisha Hunters holds this stretch, along with flying enemies and larger beasts along the snowy route.

Melee exchange with a large winged enemy on the path beyond the bridge — Clearing the flying enemies on the path toward the blocked stairs. Image: Cold Symmetry

Continue to the staircase covered by an enormous stone hand, to the left of the hunters. Walk up to it and the hand pulls back automatically because you are carrying the Immaculate Crown.

Climb the now-open stairs and open the chest at the top. The Pulse Stone is inside.

How to confirm you have it, and why the path may still be blocked

Open the Tarstones menu and look under Combat. Pulse Stone appears at Level 1 with the line about projectiles generating a shockwave that pulls enemies in, and the Equip Tarstone option becomes available once a compatible Sidearm is equipped. Fire a shot into a group and the pull is immediately obvious as bodies slide toward the impact.

If something goes wrong, it is almost always one of two things. A hand that refuses to recede means the Immaculate Crown is not in your inventory yet, so go back through Mornefrost Grave and take it from the corpse. A bridge that stays impassable means only one of the two bells has been hit, and the second one, positioned in front of the bridge on the right, still needs a shot.

Raising the shockwave size

Upgrades happen at the Tarforge in Marrow Keep, and Franz needs the Etching Needle before the higher levels appear as options. That quest item sits in a bone chest just before the Magdalena, the Lady of the Woods boss fight. When you spot Ruk past the bridge, drop through the opening and turn right before the tunnel to find the small alcove holding it.

After that, keep the Pulse Stone equipped and kill enemies to fill its experience bar. Once the bar is full, return to Franz and pay Coin to push it to the next level. Each step widens the shockwave from small to medium to large, which is the difference between nudging one enemy and hauling a whole cluster into your swing.