Mortal Shell 2: Frostshard Stone Location Guide

The Frostshard Stone is the Tarstone that turns your sidearm into a frost weapon, and it is tucked away behind one of the more awkward detours in Mortal Shell 2. It sits past a boss fight, past a hidden passage, and past a freezing zone that chips away at your health the whole time you are in it. Nothing about the route is signposted, so it is easy to walk right past the entrance.

Quick answer: Cleanse the Sisters’ Gate beacon to open the Corrupted Gate, fight through to Ovate’s Chamber and kill Draeg, the Conqueror, then cleanse the Conqueror’s Hoard beacon and take the hidden path directly behind the beacon structure. The Frostshard Stone is in the stone chest at the far end of the statue bridge.

Frostshard Stone effects and sidearm compatibility

Frostshard Stone is an Infusion-type Tarstone. Slot it into a sidearm and it spends Resolve to coat your shots in Frost. Upgrading it does not change the Resolve cost, it changes how long the coating sticks around before you have to pay for it again.

Tier	What it does
Base effect	Consumes 20 Resolve to infuse your Sidearm with Frost
First upgrade	Infusion lasts for 4 shots
Second upgrade	Infusion lasts for 8 shots
Final upgrade	Infusion is permanent

The important restriction is compatibility. Frostshard Stone only works with the Triarch Repeater. If that sidearm is not in your kit yet, the Tarstone will sit unused in your inventory, so grab it when you are ready to actually build around rapid frost application.

Opening the Corrupted Gate and reaching Draeg, the Conqueror

Everything starts near the Outskirts of Mammon beacon. The Corrupted Gate stays shut until you light the beacon that gates it, so this first leg is mandatory even if you already know where the chest is.

Travel to the Outskirts of Mammon beacon and head toward Sisters’ Gate. Cleanse the Sisters’ Gate beacon when you arrive. This is what makes the Corrupted Gate appear as a usable entrance on your map.

Player sprinting across an open field toward a large siege engine on the way to Sisters' Gate — The run out to the Sisters’ Gate beacon. Image: Cold Symmetry

Open the map, locate the Corrupted Gate, and step inside. The interior is unmapped, so you are navigating by sight from here on out.

Follow the path through the gate area until you reach the Ovate’s Chamber beacon. Cleanse it before you push forward, because the boss arena is immediately beyond it and you do not want to redo the approach.

Beacon menu for Ovate's Chamber with the Enter Beacon option highlighted — The Ovate’s Chamber beacon menu, with Enter Beacon selected. Image: Cold Symmetry

Defeat Draeg, the Conqueror. The kill hands you the Conqueror’s Reward Tarstone, which spends 300 Resolve on a run of quick piercing thrusts, with each hit landing for 200 percent damage. More importantly for this trip, it also causes the Conqueror’s Hoard beacon to appear.

Tarstones menu showing the Conqueror's Reward panel and its 200 percent damage line — The Conqueror’s Reward Tarstone in the Tarstones menu after the boss fight. Image: Cold Symmetry

The hidden path behind the Conqueror’s Hoard beacon

This is where most people stop, because the beacon looks like the end of the area. It is not. There is a passage tucked directly behind the beacon structure itself.

Cleanse the Conqueror’s Hoard beacon. Do this first so you have a respawn point right next to the frozen area instead of restarting from the boss room.

Walk around to the rear of the beacon structure and look for the gap leading out. It opens into a snowy, open-air stretch that is separate from the rest of the gate.

Move from bonfire to bonfire as you cross the snow. The cold applies constant frost damage while you are out in the open, and standing near a lit fire is what stops the drain. Treat the fires as checkpoints, clear whatever is chasing you next to one, then sprint to the following fire.

Keep pushing along the icy path until you reach the giant stone mouth at the far end. Enemies harass you the whole way, and fighting them out in the open is what usually kills people rather than the enemies themselves.

Armored character crossing snow toward giant skull-shaped structures with the HUD visible — The approach through the frozen zone toward the giant stone mouth. Image: Cold Symmetry

Go through the mouth and cross the bridge lined with frozen statues. It is packed with enemies, and the bridge is narrow enough that pulling them a few at a time is safer than charging the middle.

Armored character swinging a sword into a crowd of enemies on the snow-covered statue bridge — Clearing the statue bridge before the chest at the far end. Image: Cold Symmetry

Open the stone chest waiting at the opposite end of the bridge. That chest holds the Frostshard Stone.

Confirming the pickup and the reasons the route fails

You know it worked when Frostshard Stone shows up in the Tarstones menu under Infusions, with the line about consuming 20 Resolve to infuse your sidearm with Frost. Equip it to the Triarch Repeater and the frost effect becomes available on your sidearm shots.

Three things stop people from getting there. The Corrupted Gate will not open if the Sisters’ Gate beacon has not been cleansed. The Conqueror’s Hoard beacon does not exist until Draeg, the Conqueror is dead, so there is no hidden path to find beforehand. And the passage behind the beacon is genuinely easy to miss, since it reads as scenery rather than a route.

Note: the frost damage in the snowy area is continuous, not triggered by enemies. If your health is sliding while nothing is attacking you, you have simply spent too long away from a bonfire.

Upgrading the Frostshard Stone at the Tarforge

Tarstone upgrades run through Franz at the Tarforge in Marrow Keep, but he cannot do the higher tiers until you hand him the Etching Needle. That quest item comes from a bone chest just before the Magdalena, the Lady of the Woods boss fight. When you spot Ruk past the bridge, drop down through the opening and turn right before the tunnel to find the small side area holding the chest.

After Franz has the needle, upgrades still need experience. Keep the Frostshard Stone equipped and kill enemies until its XP bar fills, then return to Marrow Keep and pay Coin to push it to the next level. Repeat that cycle and the infusion goes from a short burst of shots to permanent, which is the point where the Triarch Repeater stops feeling like it needs constant Resolve babysitting.

The detour is worth doing on the same visit as the boss fight rather than coming back later. The beacon is already lit, the enemies on the bridge are already thinned out, and you walk away with two Tarstones instead of one.