Mortal Shell 2: Withered Shoals Walkthrough and All Secrets

Withered Shoals is the swamp region behind the Gate of Mammon, the western corrupted gate in the Ruins of Mammon. It holds three beacons, two dungeon challenges, two Tarstones sitting in chests, an optional mini-boss, a healing upgrade item, and the Hexapod, the area’s main boss. Clearing all of it in one pass is straightforward once you know the order things appear in.

Quick answer: Cleanse the Gate of Mammon beacon to open the corrupted gate, then work through the Shoals in this order — Ossinite Falls beacon (Broodshell Nest) and the Torpor Stone behind the waterfall, Nameless Pass beacon (Odious Crevice) and the Charged Stone chest, the Depleted Gland in the hollow arm above the arena, then drop into the fog for Hexapod and cleanse Hexapod’s Burrow.

Everything you can collect in Withered Shoals

The unique pickups are what matter for completion. Everything else in the zone is upgrade material — Laterite, Ventrium, Dorsalite, Gloom, plus a Burnt Effigy, a Common Moonshine, and a Coin of Mammon near the entrance stairs.

Item	Where it comes from
Strange Remnant (Sidearm Tarstone)	Defeat the Strange Grisha mini-boss past the Bone Gate
Grisha Remnant	Also dropped by the Strange Grisha
Torpor Stone	Chest behind the Ossinite Falls waterfall
Sheephead Totem	Kill the sheep hidden behind the same waterfall
Charged Stone	Chest to the right of the corruption source in Odious Crevice
Depleted Gland	Hollow underside of the arm above the boss arena, after speaking to Ruk
Hexapod Core (Axatana Tarstone)	Defeat Hexapod

Opening the corrupted gate

The Shoals sit behind the Gate of Mammon, which is the southwest gate when you look at the map from Marrow Keep. That gate stays sealed until you cleanse its beacon, so if the barrier is still up, the beacon is the reason.

From the Outskirts of Mammon, head southwest through the Deserted Slums and past the High Lord’s Keep path until you reach the Gate of Mammon beacon at the bottom of the wooden elevator.

Cleanse that beacon. The corrupted gate turns from a blocked barrier into a glowing white doorway you can walk through, which is your confirmation it worked.

Pass through the gate and take the short corridor beyond it. Tiger Leeches hang from the ceiling here. Grab the Burnt Effigy off the wall and the Common Moonshine beside it before dropping down the scaffolding.

Harbinger dropping down wooden scaffolding platforms in a dark tunnel beyond the Gate of Mammon — Dropping through the wooden scaffolding in the tunnel that connects the Gate of Mammon to the Shoals. Image: Cold Symmetry

Take the second staircase near the bottom to reach the space under the wooden platform. Circling behind the stairs turns up a Coin of Mammon.

The Strange Grisha and the Strange Remnant

The first open room of the Shoals is crowded — Bell Snails at the gate, Grisha Hunters and Leechtongues brawling in front of a huge crow skull, and more Tiger Leeches. Clear the snails first by blocking or parrying as they open their mouths, staggering them, then punishing. A Dorsalite sits to the left of the room and behind the skull, with a Laterite in the middle.

The Bone Gate on the right side launches you to an island arena holding the Strange Grisha. It is optional and completely off the route to Hexapod, but it is the only source of the Strange Remnant, a Sidearm Tarstone that converts your sidearm into a chaining projectile.

Go in with full health and Resolve. The fight uses the standard Grisha moveset, so parry or Harden through the ordinary slashes and riposte when it staggers, but never try to absorb the red attack — dodge around it instead. Keep your combos short, because the arena is ringed by a chasm and overcommitting near the edge ends badly. Take the Bone Gate back when you are done.

Ossinite Falls beacon and the Torpor Stone

Head east from the Bone Gate and up the slope. This stretch is full of Roaming Heads and Infested Stalkers, and spiders drop in while you are busy with them, so keep your spacing and open with ranged attacks where you can. There are bear traps scattered through the brigand camps here too. A Laterite sits inside a large ribcage and another Dorsalite waits on the far right.

Armored Harbinger running forward through a dark cavern passage in Withered Shoals — The cave passage that connects the bone fields to the Ossinite Falls beacon. Image: Cold Symmetry

Keep going until the waterfall comes into view. The beacon sits beside it, but do the waterfall first.

Walk through the falling water. A sheep is hidden inside — killing it adds another stack of Sheephead Totem.

Open the locked chest tucked to the northeast behind the water for the Torpor Stone. This Tarstone infuses a melee weapon with Stasis, which freezes and slows enemies on hit — it pairs well with fast weapons like the katana against the swarms later in the zone.

Return to the beacon, revitalize it, then choose to cleanse it. That drops you into the Broodshell Nest.

Buff your weapon before you drop from the edge inside the nest, because the arena mixes eels, large snails, and smaller snails at once. Clear every enemy, cleanse the source of corruption, then take the Ovum and return to the beacon.

Nameless Pass beacon and the Charged Stone

From the Ossinite Falls beacon, clamber up the fallen stone and take the slope. Both directions pay off. Left leads to a Bell Snail guarding two hidden Ventrium. Right takes you toward the Pass, past Leechtongues, an Infested Stalker, and worms holding the path.

At the far end, a spider blocks a narrow crack in the rock. Kill it and squeeze through. On the other side, climb the giant arm for two Dorsalite, then walk out to the wrist and drop down to pick up an extra Ventrium. Follow the path down past the tent — there is more Ventrium on the structure beside it — and into the open area where big-headed enemies and another snail wait.

Character walking along a narrow rocky ledge on the cliff route toward Nameless Pass — The cliffside route between Ossinite Falls and the Nameless Pass beacon. Image: Cold Symmetry

A bone structure in the middle of that clearing holds three Laterite. Turn from it and the Nameless Pass beacon is a short walk ahead. Look carefully — a large snail’s shell reads almost identically to a beacon from a distance.

On-screen REST AT BEACON prompt displayed as the player stands next to the Nameless Pass beacon — The rest prompt confirms you have reached a real beacon and not a snail shell. Image: Cold Symmetry

Revitalize the beacon, then select the cleanse option to enter its challenge.

Inside, head for the throne to collect a Dorsalite before moving on.

Dorsalite pickup notification appearing on screen as the player collects the material — Dorsalite is the most common upgrade material scattered through the Shoals. Image: Cold Symmetry

Continue into the Odious Crevice, clear the spiders, and follow the tunnel, dealing with the frogs inside it as you go.

When you exit the tunnel, the source of corruption is northwest, below you. Ignore it for a moment and go right instead — the locked chest there holds the Charged Stone.

Now cleanse the corruption, collect the Ovum, and return to the surface. Proxima’s vestige is nearby if you want the summon for the boss.

Note: leaving the Odious Crevice without the chest is the single most common miss in the Shoals, because the Ovum is in plain sight and the chest is not.

Ruk and the Depleted Gland before the boss drop

Head left from the Nameless Pass beacon and keep climbing along the arm. Ruk, the giant raven, waits at the end of the path — speak to him before continuing.

The gland is easy to walk past. Drop down to the lower lip of the hollow arm rather than falling straight into the fog, then turn around and walk a few steps into the hollow underside. The Depleted Gland is sitting there, and it feeds into a healing upgrade later. Once it is in your inventory, drop from the end into the fog to start the fight. There is no way back up mid-arena, so do not jump early.

How to beat Hexapod

Hexapod is a giant spider-like creature that fights almost entirely with multi-hit swings, so upgrades to your Harbinger, Shell, weapon, and Tarstones pay off more here than raw dodging skill. Summon Proxima before the fight if you have the Glimpse — she holds its attention with the Triarch Repeater while you land damage or infuse.

The core loop is flanking. Get behind it, hit it, let it turn, repeat. Parrying and blocking are unreliable against it because its most dangerous moves are unblockable, so read the tells instead.

Tell	What to do
Raises and spreads its appendages	Get out from directly underneath; dodge backward or away
Tentacles fully unfurled, insides visible	Stop attacking and reposition — a heavy attack is coming
Jumps back and flashes red (charge/ram)	Dodge sideways, not backward, then punish the recovery
Red indicator with no visible body	It is burrowing and will erupt beneath you; dodge sideways as it lands
Retreats and gathers energy in its mouth (around 60% HP lost)	Projectiles rain down on a delay; keep moving and watch the ground
Just staggered	Do not stay in front of it — the unblockable grab comes out of the recovery

Never commit to a long attack animation once a warning appears. Harden is the safety net when you have already started a swing and cannot cancel it.

The kill drops the Hexapod Core, a Tarstone exclusive to the Axatana that spends 60 Resolve on a rapid string of strikes, plus Ova to siphon.

Finding the Hexapod’s Burrow beacon in the fog

A third beacon appears in the arena after the boss dies, but the mist makes it genuinely hard to spot. If you cannot see it, there is a reliable way to line it up.

Quit to the menu and reload. You respawn at the beacon above the arena.

Drop back into the arena and do not move the Harbinger. Rotate the camera behind you and start walking that way. You should reach a giant skeleton, which also holds a Dorsalite.

Head left from there to a second skeleton, put your back against its white bone, and walk straight forward. The beacon appears ahead of you.

Revitalize it, cleanse it, then clear the challenge area, hold the cleanse input on the source of corruption, and interact with the egg to collect the Ova. Completing the cleanse sends you back to Marrow Keep, which is your sign the zone is finished.

With all three beacons cleansed and the Torpor Stone, Charged Stone, Hexapod Core, and Depleted Gland banked, Withered Shoals is done and the route opens toward Silent Steps. If you skipped the Strange Grisha on the way in, the Bone Gate near the first open room is still there — the Strange Remnant is the only piece of the zone you cannot pick up again by any other route.