Mortal Shell 2 Bor, the Deluded Monarch Boss Guide
Quick answer: Optional Mammon monarch. Monarch's Vestige infuses a sidearm with Phantom. Worth it on a Sester / Genessa east-side sweep.
Official promotional screenshot: Steam / Cold Symmetry / Playstack
Location and route
Boss location: Beneath the Abbey Entrance village / cleanse Abbey Entrance Beacon.
East Mammon, Abbey Entrance. KeenGamer: beneath the village. Game8: cleanse Abbey Entrance Beacon.
Preparation checklist
- Come after Outskirts of Mammon feels comfortable.
Attacks and counters
| Attack | Tell / danger | Safe response |
|---|---|---|
| Monarch melee | Named village-underboss | Community strings are thin; play spacing-first. |
Step-by-step fight plan
- Kill Bor, take Vestige, continue toward Genessa if not unlocked.
Rewards, achievement, and what comes next
- Glimpse x1, Monarch's Vestige, Gloom x9,241 (Game8 / KeenGamer).
More boss guides
- Magdalena, the Lady of the Woods
- The Lost Child
- The Nameless Captive
- Zmey, the Unbidden
- Droeg the Conqueror
- Hexapod
- Isaac, the Scholar Prince
- Orrem, the Discarded Golem / Orrem, the Reclaimed
- The Monolith
- Malborn Offspring
- Tar Golem
- Great Arbiter of Flesh
- The Wandering Shepherd
- The Warden
- Vellen, High Lord of Mammon
- Sester Secundus
- Gloombound Ritualist
- Tainted Vestige
- Vrannic, the Grand Illusionist
- Circle of the Grasping Root
- Grisha
- Vrago, Solikar Champion
- Bloodcursed Lithopod
- Broodshell Swarm
- Tishina's Confessor
- Gloombound Legion
- Lucian, the Thirsting Knight
- Tarblighted Stoner
- Rabid Grisha Pack
- Pale Grisha
- Urrig, the Executioner
- Caged Grisha
- Strange Grisha
- Twin Sesters
- Stray Sesters
- Sariel, the Endless
- Servants of the Scholar Prince
- Solnir, the Gloom Seeker
- Gloombound Wraith
- Starved Harridan
- Viletongue Batushka
- Subjugated Guardian
- Infested Miner
- Prophet of Profane Infinities
Evidence: The boss name and achievement wording are cross-checked against the official Steam achievement list. Location, attacks, rewards, and strategy are attributed community synthesis checked against this KeenGamer and Game8 Abbey Entrance entries. Verified August 23, 2026; balance and behavior may change with patches.