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How to unlock every Shell in Mortal Shell 2

All 9 Shells, one section each: where the body lies, what is standing in front of it, and what you get once you are wearing it. 4 of them are behind a named fight; the rest are found, or handed over.

What actually unlocks a Shell?

Inhabiting one. A Shell is a body you find rather than a class you pick, so the unlock is a place you reach rather than a thing you buy. Exactly one Shell is listed as a boss drop outright; the rest are claimed where they lie, and where a fight stands in the way the source names it alongside the location.

Every line below is the catalog's. Where the source states only a place, that is all this page states: a route invented to fill the gap would send somebody the wrong way around a region for an hour.

Once you have one, the Glimpses you spend on its bond go to that Shell and no other, so committing beats sampling. The build guides name a Shell each and the Tarstones that fit alongside it.

How to unlock Eredrim the Venerable

Peace has a price.

Where it is
Citadel of Penance, Fainweald
The fight in the way
The Warden
Named on the way
Citadel of Penance

Both of Eredrim's actives deal Break damage and his passive pays out on Riposte, so the whole Shell is one loop: break something, riposte it, bank Slaughterer stacks, spend them before you rest. Stacks are lost on resting or being severed, which is the catch — this is a Shell that punishes retreating to a beacon, and rewards clearing a stretch in one run.

Eredrim the Venerable: abilities and full skill tree →

How to unlock Genessa the Wayward

Nothing is so broken it can’t be made whole again.

Where it is
Revenant Graves
The fight in the way
Sester Secundus
Named on the way
Marrow Keep
Who is involved
Sester Genessa
Passive
Duality

Duality is the strongest passive in the game to read carefully: when her health runs out she becomes Stray instead of being severed from the Harbinger. That is a second chance built into the Shell rather than into an item. The doubles are the rest of the kit, and Stray Doubles copying sidearm attacks is what makes her the one Shell where a ranged build genuinely doubles its output.

Genessa the Wayward: abilities and full skill tree →

How to unlock Gragu the Insatiable

The heart speaks no lies.

Where it is
One Legged Wolf Tavern

Gragu solves sustain, which nothing else on this list does. Revered Heart restores health and refills by killing, so his healing scales with how well the fight is going rather than with a finite stock of items. Staggering Blow charges for more damage, so the Shell asks you to make room to wind up — which is exactly what a healing passive buys you.

Gragu the Insatiable: abilities and full skill tree →

How to unlock Harros the Vassal

A man is more than mere flesh and bone.

Where it is
Forlorn Village (Prologue)

The tutorial Shell, and the game takes him back — so treat him as a lesson rather than an investment. Stone Stun is the lesson: petrified enemies take no health damage but do take Break damage, which is the game teaching you that Break is the real currency of a fight before it ever asks you to manage it. It pairs directly with the Untarnished Seal you start with.

Harros the Vassal: abilities and full skill tree →

How to unlock Lazlo the Justiciar

Justice is not given, it is exacted.

Where it is
Royal Crypt of Mammon, Mammon
The fight in the way
Vellen, High Lord of Mammon

The only Shell with flat damage reduction — 10% while his armor is on — and the only one whose active gets stronger the more you press it. Retribution builds toward Overheat, which pays a bigger shockwave and Burn stacks at a cost. That combination makes Lazlo the most forgiving Shell to learn a hard fight on: you can afford the mistakes that teach you the moveset.

Lazlo the Justiciar: abilities and full skill tree →

How to unlock Proxima the Broodseeker

Purpose gives the soul its shape.

Where it is
Fainweald
Named on the way
Marrow Keep

Biosampler is a grapple, and a grapple is a movement tool as much as an attack — it pulls the enemy in or pulls you in, which is the closest thing in the game to controlling the distance of a fight. Grafted Armor's mitigation also prevents stagger, so the chance it rolls does not just cut damage, it saves your combo.

Proxima the Broodseeker: abilities and full skill tree →

How to unlock Sariel the Endless

That path to perfection is paved with blood.

Where it is
Chamber of Becoming dungeon, Mammon
The fight in the way
Sariel, the Endless
Passive
Purge

Sariel runs a second health bar with the sign flipped, and everything on her kit pushes it up. While she is holding no Pain, Purge turns half of an incoming hit into Pain instead, and every activation of Exodus of Thorns puts more Pain on her to spread Curse around her — so the Shell charges you in the same currency whether you are being hit or attacking. At maximum Pain you dodge faster, which is the reward for having filled it. Highest ceiling here, and the least forgiving floor.

Sariel the Endless: abilities and full skill tree →

How to unlock Smert the Apostate

Truth is the final revelation before death.

Where it is
Prophet's Rest, Fainweald
Named on the way
Fainweald
Active
Miracle

Miracle stops time and turns you unarmed — Chaos stacks applied during the pause detonate when it resumes. Deadly Revelation only switches on at 10% health or lower. Both halves want you at the edge, which makes Smert the clearest glass cannon of the nine and the worst first pick.

Smert the Apostate: abilities and full skill tree →

How to unlock Tiel the Acolyte

Once you have nothing, you're free to take everything.

Where it is
Mushroom Village

Tiel is built on one timing: Shadow Dash rewards dodging just before a hit lands, not early. Get it right and you gain Shadow and inflict Stagger damage; get it wrong and you have simply dodged. Everything else — Lingering Shadow, the Shadow Strike follow-up — spends what that timing earns, so this is the Shell that improves most as you learn the game rather than as you spend Glimpses.

Tiel the Acolyte: abilities and full skill tree →

Which Shell should you commit to first?

Read the passive rather than the active. It is the half that is running while you are being taken apart, and the half you are not paying for. Harros is the exception, and for a different reason: the prologue lends him and then takes him back, so nothing you spend on him stays spent.

If you would rather see the whole grid, the Shells category lists every active, passive and skill-tree node side by side.