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Major Boss
Thorne
Story Encounter
A recurring major opponent whose encounters appear at key points throughout the story.
Boss Database
Mina the Hollower Boss Guide
Browse major story bosses, secret fights, optional encounters, and special boss battles across Tenebrous Isle. This hub will continue to expand with individual strategies, difficulty ratings, screenshots, and community notes.
Mina the Hollower contains 26 boss fights in the main game count,
while database lists may show more entries because recurring encounters,
secret bosses, alternate forms, and mini-bosses are often catalogued separately.
Main Route
Main & Major Bosses
Story bosses and major encounters tied to the main progression, Spark Generator routes, and late-game sequence.
Main Boss
The Duchess of Queensbury
Queensbury Crypt
An early major boss that tests spacing, burrow timing, and pattern recognition.
Main Boss
Nox's Beast
Nox's Bayou
A major Bayou encounter that increases pressure and demands better movement discipline.
Main Boss
Madd House
Kindlewood
A memorable major encounter on the route toward Septemburg.
Main Boss
The Carving Man
Septemburg
A chase-driven major encounter that becomes a full fight once the final arena is reached.
Major Boss
Major Miner
Bone Beach
A mid-game boss with strong arena pressure and a more demanding combat rhythm.
Major Boss
Mined Mind
Bone Beach
One of the game's more punishing mid-to-late encounters, with high pressure and limited room for mistakes.
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Boss
Mock Moon
Nox's Bayou
An optional-style boss-room encounter found at the end of the Moonlit Path.
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Major Boss
Frozen Horror
Coltrane Peak
A difficult late-region encounter known for punishing mistakes and demanding clean movement.
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Major Boss
Locomotress Agnes
Coltrane Peak
A demanding encounter with strong momentum and relatively little room for careless positioning.
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Boss
Astromancer
Astral Orrery
One of the major encounters waiting inside the Astral Orrery.
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Boss
Lumenarks
Astral Orrery
An Astral Orrery boss encounter connected to the late-game progression.
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Boss
Orrery Warden
Astral Orrery
A late-game Astral Orrery encounter guarding progression deeper into the region.
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Boss
Sparkmancer
Astral Orrery
A Spark-themed boss encounter in the Astral Orrery.
Main Boss
The Congealed
Astral Orrery
A required late-game fight and one of the strongest difficulty checks on the main route.
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Endgame Boss
Furgus the Faithful
Radiant Manor
A dangerous endgame encounter in the Radiant Manor sequence.
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Endgame Boss
Patchling
Radiant Manor
One of the encounters in the back-to-back Radiant Manor boss sequence.
Endgame Boss
Baron Lionel
Radiant Manor
A major late-game confrontation at the center of the story's final sequence.
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Final Boss
Radiant Lionel
Endgame
A final-stage form associated with the game's climactic boss sequence.
Off the Main Path
Secret & Optional Bosses
Side-quest encounters, hidden fights, optional superbosses, and bosses that many players can miss entirely.
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Optional Boss
Nether Kraken
Intro / Shipwreck
An optional opening encounter that can be missed before the main island journey begins.
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Secret Boss
Armand
Ossex
A secret encounter connected to Legovich's shop progression.
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Secret Boss
Dark Deluxy
Secret Encounter
A hidden optional fight aimed at players exploring beyond the main route.
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Optional Boss
Dugin
Southern Outskirts
An optional encounter tied to Ack and Dak, with a randomized appearance and repeat fight requirement.
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Secret Boss
Evra the Undying
Secret Encounter
An optional secret boss encountered outside the standard progression route.
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Secret Boss
Maxi
Secret Encounter
An optional fight that can be missed during a normal story-focused playthrough.
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Optional Boss
Midden
Queensbury
A hidden Ancestral Chamber encounter triggered through an unusual dialogue interaction.
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Secret Boss
Mirren
Optional Encounter
A secret encounter connected to exploration outside the main progression path.
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Secret Boss
Thalassion
Fishing Hole
A difficult optional giant-fish encounter and one of the game's stronger secret fights.
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Secret Boss
Wonder Willis
Ossex Music Hall
A pirate-shark secret boss that serves as the payoff to a long sidequest chain.
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Special Boss
Radiant Thorne
Late Game
A special late-game Thorne encounter separated from his earlier story fights.
Special Encounters
Mini-bosses & Other Major Encounters
Smaller boss-like encounters that are useful to track separately from the main 26-fight boss count.
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Mini-boss
Hulk Trooper
Prologue
A larger and more dangerous Trooper encounter before the game's first proper major boss.
Difficulty Guide
How Hard Is Every Boss?
The database gives you the encounter list. The upcoming difficulty guide rates every major fight from 1 to 5 stars based on a first normal playthrough, with short explanations and community reactions.
View Boss Difficulty RatingsLooking for a difficulty comparison? See our complete 1-to-5-star Boss Difficulty Ratings .
Keep Exploring
Related Guides
Boss Tier List
A broader ranking of Mina the Hollower bosses by threat, design, and overall encounter impact.
Best Builds
Weapon, Sidearm, and Trinket combinations for difficult fights and general progression.
Hidden Secrets
Secret bosses, hidden endings, unusual transformations, and community discoveries.