Quick answer
Mortal Shell II has 16 main campaign bosses split across Fainweald, Mammon and the Unfound Path. Most drop a unique Tarstone or weapon component, and many arenas allow a summonable Shell ally once the right bond is unlocked.
Fainweald bosses
The opening region holds the prologue encounter and most of the early-to-mid game bosses.
| Boss | Location | Notable drop / reward | Shell ally |
|---|---|---|---|
| Gloombound Ritualist | Forlorn Village, past Village Outskirts Beacon | Gloom | — |
| Tainted Vestige | Hidden cave near Disciple’s Grotto | Gloom | — |
| Tar Golem | Disciple’s Grotto, Bone Gate path | Secret achievement | — |
| Magdalena, Lady of the Woods | Glutted Mire, Sunken Village swamp | Magdalena’s Memento (Axe & Dagger) | Smert |
| The Lost Child | Sanguine Caverns | Lost Clotstone (Obsidian Hammer, Veteran’s Battle Axe) | Tiel |
| The Nameless Captive | Prisoner’s Domain | Captive’s Scabstone (Great Martyr’s Blade) | Eredrim |
| Great Arbiter of Flesh | Southeast of Widow’s Overlook Beacon | Arbiter’s Prize | — |
| The Wandering Shepherd | Sunken Village pasture | Sheephead Totem, Tarblighted Trophy | — |
| Vrannic, the Grand Illusionist | Hall of Illusion, Mushroom Village Gate | Volatile Fragment | — |
| Broodshell Swarm | Southeast of Feeding Grounds | Justiciar’s Stone | — |
| Grisha | Flooded Village dungeon | — | — |
| Lucian, the Thirsting Knight | Hidden Keep near Stonebled Gate | Serpent Stone | — |
Mammon bosses
The second major region gates several weapons behind its dungeon bosses.
| Boss | Location | Notable drop / reward | Shell ally |
|---|---|---|---|
| Droeg, the Conqueror | Conquered Temple | Black Needle | Gragu |
| Hexapod | Withered Shoals | Axatana | Proxima |
| Isaac, the Scholar Prince | Faded Citadel | Scholar’s Wormstone (Clockwork Scythe) | Lazlo |
| Tarblighted Stoner | Sanguine Shoreline cave | — | — |
Unfound Path bosses (endgame)
The final stretch beneath Marrow Keep contains the campaign’s hardest encounters.
| Boss | Location | Notable drop / reward | Shell ally |
|---|---|---|---|
| Orrem, the Discarded Golem | Bridge of Procession | Orrem’s Head (5,000 coins) | Sariel |
| The Monolith | Obsidian Vault | Monolith Fragment (5,000 coins) | — |
| Malborn Offspring | Faithful’s Shelter | Offspring Trophy (5,000 coins) | — |
| Zmey, the Unbidden | Unfound Path central platform | New Game Plus access | — |
The Monolith was nerfed in Balance Patch 1 (-19% damage, -10% health) after community feedback about its beam phase.
Boss rewards to prioritize
If you are unsure which bosses to rush first, prioritize the ones that unlock your preferred weapon:
- Axe & Dagger → Magdalena
- Veteran’s Battle Axe / Obsidian Hammer → The Lost Child
- Great Martyr’s Blade → The Nameless Captive
- Black Needle → Droeg
- Axatana → Hexapod
- Clockwork Scythe → Isaac
Balance Patch 1 impact
Two endgame bosses saw direct nerfs:
- The Lost Child: damage -10%, health -15%
- The Monolith: damage -19%, health -10%, attack timing adjusted
Several normal enemies were also weakened, making the run-up to bosses less punishing.
Last verified: 2026-08-28.
FAQ
How many bosses are in Mortal Shell 2?
The full game contains 16 main campaign bosses across Fainweald, Mammon and the Unfound Path, plus several miniboss encounters.
Which boss drops the Lost Clotstone?
The Lost Child in the Sanguine Caverns drops the Lost Clotstone, used for the Obsidian Hammer and Veteran's Battle Axe.
Can you summon Shells for boss fights?
Yes. Many boss arenas let you summon a Shell ally if you have unlocked the corresponding bond.