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Mortal Shell 2 Squall Stone: Find It in the Central Sewers and Understand Its Effect

The Squall Stone is in a Central Sewers chest reached from the Executioner’s Pulpit Beacon. Here’s the route and what its projectile effect and sidearm listing mean.
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Find the Squall Stone in a chest inside the Central Sewers. To reach it, cleanse the Executioner’s Pulpit Beacon in Prisoners’ Domain, ride the elevator down, then follow the sewer route through its gates and enemy challenge to a side chamber. The stone makes projectiles spin after they hit a target; its precise upgrade values are less certain than that core effect.

Where to find the Squall Stone

The route below is reported by Nerd’s Chalk, updated August 25, 2026. It is a secondary guide, not an official map or firsthand account.

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  1. Cleanse the Executioner’s Pulpit Beacon. It is in Prisoners’ Domain, near the Tishina’s Confessor fight. The guide says cleansing it opens the linked Central Sewers.
  2. Take the elevator beside the beacon. It leads down into the sewers.
  3. Follow the main sewer route. Break barriers and deal with enemies as you proceed.
  4. Work through the gate-and-lever rooms. Shoot the target to raise the first gate, then pull the levers to open the subsequent doors.
  5. Clear the challenge room. Defeat its enemy gauntlet and press the room’s buttons to reveal the route onward.
  6. Open the chest in the side chamber. The guide’s quick-location summary places it near the iron-maiden ghost room.

The chest is in the Central Sewers, not on the beacon platform. The item is spelled Squall Stone; “Squail Stone” is a misspelling.

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What the Squall Stone does

Squall Stone is a Sidearm Tarstone. An Open Beta client-text snapshot, identified as build 24459107 and checked August 18, 2026, describes its effect this way: “Projectiles spin in place for a duration after hitting their target.” That wording establishes the basic behavior in that build, but not necessarily the balance of a later retail version.

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Reported upgrade values

Nerd’s Chalk reports the following values. Treat them as guide-reported figures rather than independently verified current values: the guide itself notes disagreement over whether the stone has three or four ranks.

Rank Reported spin duration Reported damage
Level 1 3 seconds 8% of original damage
Level 2 4 seconds 9% of original damage
Level 3 5 seconds 10% of original damage

Before spending upgrade materials, check the current Tarforge or item screen for the values and rank count in your game version.

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Sidearm compatibility and practical use

An unofficial, fan-maintained Mortal Shell II database lists the Squall Stone as compatible with the Salvaged Trebuchaxe. Because that listing is not official, confirm compatibility on the item’s in-game display before building around it.

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The lingering spin effect may be useful with a sidearm that puts more shots on one target, but that is a practical possibility, not a measured performance result. No specific sidearm combination can be called best on the available evidence.

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How it differs from other projectile Tarstones

The same Open Beta client-text snapshot describes two alternatives by their projectile patterns:

  • Splitting Stone fires multiple projectiles without additional Resolve.
  • Myriad Stone fires multiple projectiles in an arc without additional Resolve.

Those descriptions and Squall Stone’s post-hit spin effect come from the build 24459107 snapshot; they are not independent tests of damage or effectiveness. The useful distinction is the effect you want: a lingering spin after impact, multiple projectiles, or multiple projectiles in an arc.

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