The Sunken Horror is the most visually distinct of Malignus's four bosses and the least documented. Official media shows a tentacled boss spreading a dread aura in its sanctum, but the public kit does not publish an ability list or upgrade names.
Sunken Horror at a glance
Confirmed
- Listed stats in the boss select: Cruelty 10, Occult 8, Battle 7.
- Official media shows a dread aura and tentacles in the sanctum.
- The boss is shown waiting in the sanctum while minions bring raided treasure home.
- No public ability list or upgrade tree has been released.
Not announced
- The Sunken Horror's Hunt stat is not shown.
- No ability names, cooldowns or upgrade effects are public.
- Whether the dread aura damages, debuffs or simply marks targets is unknown.
- The range and control rules for the tentacles are undocumented.
Compiled from official screenshots and store copy. Balance and UI values can change during Early Access.
Confirmed stats
The official boss select highlights Cruelty 10, Occult 8 and Battle 7 for the Sunken Horror. Its Hunt value is not visible in the published screen.
Abilities and signals
Not every entry below is a named in-game ability. The status label matters: “Official UI” means the name appears in a published interface screenshot; “Official media” means the behavior is visible in official footage or a screenshot caption; “Named only” means the name is confirmed but its effect is not published.
Dread aura
Official mediaOfficial screenshots and the press kit's GIF set show the Sunken Horror spreading a dread aura across the hall. The public caption is descriptive; no radius, effect or cooldown is published.
Tentacles
Official mediaOfficial screenshots show tentacles rising inside the dread aura as adventurers close in. This is confirmed visual behavior, not a documented ability with numbers.
Hoard scaling
Official UILike the other bosses, the Sunken Horror belongs to the four-boss system that levels with treasure. The level thresholds are shown on the Baleful Eye screen: level 2 at 5 treasure, level 5 at 30.
Upgrades
Upgrade tree not published
No Sunken Horror upgrade names or effects appear in the public press kit. The official art shows a boss with a large aura and tentacles, but that is visual evidence only.
How to play Sunken Horror
The advice below is editorial. It uses confirmed stats and official visuals, but it is not a recorded playthrough or a tested tier list. Treat it as a planning framework for the current build.
Plan for a kill zone, not a duel
The name, aura and tentacles all point to an area-control boss, and the official screenshots place it in a hall rather than a corridor. A room with a wide approach, a central boss and traps on the flanks gives that presentation room to work. This is an editorial inference from the published visuals, not a confirmed mechanical claim.
Cruelty is the signal
Cruelty 10 is the highest published Cruelty value among the four bosses. In minion management, Cruelty governs the unpleasant side of dungeon life: overseeing, torture and wrangling appear under that part of the duties table. Whether boss Cruelty affects those jobs is not stated, so do not budget around a bonus yet.
Wait for the ability list
This is the one boss where a launch-day guide could change quickly. The difference between a fear aura, a damage aura and a tentacle grappler is enormous. Use the confirmed stats for boss selection and leave the build specifics until Mossbomb publishes the ability screen or the game is in hand.
What we still don't know
- The Sunken Horror's Hunt stat is not shown.
- No ability names, cooldowns or upgrade effects are public.
- Whether the dread aura damages, debuffs or simply marks targets is unknown.
- The range and control rules for the tentacles are undocumented.
If you find a newer official source, send it through the contact page. We update boss pages when the developer publishes data, not when a speculative tier list goes viral.
Related pages
Sources
Sources for this page
- 01Malignus press kit and fact sheet — Mossbomb
Fact sheet, development history, feature list, character and creature art, screenshot captions, and permission for press and content creators to use the kit's media in coverage of Malignus.
- 02Official Malignus interface screenshots — Mossbomb
The press kit's 'Screenshots with the interface' set documents the New Dungeon flow, boss select, minion stats, duties, grumbles, behavior settings, trap build menu, wiring, Dark Arts, boss upgrades, prisoners, altar and overworld map. Used for observations that are not spelled out in the store copy.
- 03Mossbomb — the studio making Malignus — Mossbomb
Developer site. Confirms the November 13, 2026 Early Access date, $19.99 Early Access price, $29.99 planned 1.0 price, monthly updates, demo status, platforms, co-op and headline features.
- 04Malignus on Steam — Valve / Mossbomb
Store description, Early Access Q&A, tags, supported languages, features, system requirements and the storefront's November 12, 2026 date display.
- 05Malignus — Demo Launch Trailer (2026) — Mossbomb
Official trailer used only for visual observations such as the Cinder Demon's fire effects and the Sunken Horror's tentacles.
Accessed 1 November 2026. Full source log and verification notes: Malignus Wiki sources.