Steam lists 24 achievements, including six hidden entries. Use the list as a route planner: the opening door interaction, optional Pipe, star lockers and weapon restrictions are easier to handle before you advance. Names stay in English so you can match them to the Steam list.

For the branch slots to preserve at each stage, use the saving plan.

Personal achievement checklist

Check only what you have completed. Collection markers do not automatically unlock Stella Plena. The Missable objectives category excludes the four ending routes; a missed objective may still be recovered from a suitable earlier save.

0 / 24 achievements completed · 24 shown

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CompleteAchievement / conditionGuide
Stella Plena
Open all six Copper Star lockers before the darkroom cutoff.
Guide →
Maybe He's In The Bathroom
Knock ten times before unlocking the first apartment.
Guide →
Thinking About Him, huh?
Inspect Iván’s computer-room photo five times on Floor 2.
Guide →
The Two Stooges
Defeat at least two non-Carnito enemies with one simultaneous hit.
Guide →
Valiant Little Taylor
Defeat three Carnitos with one attack; keep a separate save.
Guide →
Hidden achievement 1
Reveal spoilers to see the name and condition.
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He Just Wanted a Hug
Trigger Vorax’s explosion and escape into another room.
Guide →
Hidden achievement 2
Reveal spoilers to see the name and condition.
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You Can Stop Now
Keep walking left in the endless green corridor before leaving.
Guide →
Classics Never Die
Free the Iron Pipe using the Screwdriver.
Guide →
Devora
Collect all three film canisters.
Guide →
One More For The Road
Consume Lavendoleum while at full health.
Guide →
Wrench Queen
Finish using only the Wrench as a weapon. Keep the Fumus pipe challenge on another save branch.
Guide →
Butcheress
Defeat the Carnitos without taking damage.
Guide →
Iron and wax
Defeat Obscuratus using only the Wrench.
Guide →
Exhaust Pipe
Defeat Fumus using only the Iron Pipe; reload an earlier save to resume Wrench Queen.
Guide →
Have You Chosen... Wisely?
Fill the bottle at three different save points.
Guide →
De Relictis
Read every page of the Old Book.
Guide →
Hidden achievement 3
Reveal spoilers to see the name and condition.
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Hidden achievement 4
Reveal spoilers to see the name and condition.
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SOLVE ET COAGULA
Complete the Lacuna finale without killing any Relicta after the Aurifer.
Guide →
MAGNUM OPUS
Kill at least one Relicta with the Aurifer and complete the Hermes finale.
Guide →
Hidden achievement 5
Reveal spoilers to see the name and condition.
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Hidden achievement 6
Reveal spoilers to see the name and condition.
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Six stars & six lockers · 0 / 12

0 / 12 collection markers checked

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Choose an ending route

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Before leaving each stage

CheckpointAction to finish or save for
Before unlocking Iván's first apartment doorKnock ten times
First visit to the Floor 2 computer roomExamine Iván's photograph five times
Before ObscuratusSeparate save for Iron and wax
Projector stairs and bar bathroomTake Screwdriver and collect Iron Pipe; do not swing it on a Wrench-only branch
Before FumusBranch for Exhaust Pipe, then reload if continuing Wrench Queen
Before completing the darkroom photoFinish all six stars and lockers; see the collection route
Before the Carnitos ambushSave for the three-at-once and no-damage challenges
Sanguis chaseLet him smash every mannequin before ending the encounter
Desiderium's looping green corridorKeep walking left for You Can Stop Now before taking the progression exit
After Aurifer, before any Relicta killKeep the clean branch save for both main endings

Exploration and story checklist

AchievementRequirement / route note
Maybe He's In The BathroomKnock ten times before unlocking the first apartment.
Thinking About Him, huh?Inspect the Floor 2 computer-room photo five times.
Classics Never DieFree and collect the bar bathroom Pipe with the Screwdriver.
Stella PlenaOpen all six Copper Star lockers.
DevoraCollect the complete set of three film canisters.
Have You Chosen... Wisely?Use three different save points to fill the Silver Bottle.
De RelictisOpen and read every Old Book page.
One More For The RoadConsume Lavendoleum when health is already full.
You Can Stop NowContinue left through the endless green corridor.
Julia and the inventory interface in an official Tenebris Somnia screenshot
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Julia and the inventory interface in an official Tenebris Somnia screenshot

Use Original size to inspect details, then scroll or swipe inside the image.

Official promotional screenshot. © Andrés Borghi / Saibot Studios / New Blood Interactive. It illustrates the game, not a tested step on this site.

Official promotional screenshot. © Andrés Borghi / Saibot Studios / New Blood Interactive. It illustrates the game, not a tested step on this site.

Combat checklist

AchievementRequirement / route note
Wrench QueenFinish the game with the Wrench as your only used weapon.
Iron and waxDefeat Obscuratus with Wrench attacks only.
Exhaust PipeDefeat Fumus with Pipe attacks only; conflicts with a continuous Wrench run.
The Two StoogesDefeat at least two non-Carnito enemies in one simultaneous hit.
Valiant Little TaylorGroup three Carnitos and defeat them together with one strike.
ButcheressComplete the Carnitos encounter without taking a hit.
He Just Wanted a HugMake a Vorax begin its explosion, then escape into another room.

Hidden objectives and endings

Reveal six hidden achievement conditions and the four ending names
AchievementRequirement / route note
Heart of LeadHidden: eliminate every Relicta, checking all floors.
Bad PuppyHidden: lure Sanguis into destroying every mannequin.
AcrophobiaHidden: let Lacuna grab and drop Julia; this attempt ends in death.
DevouredHidden: let the mouth of Hermes consume Julia.
SOLVE ET COAGULAFinish Ending 1, the no-Relicta-kill branch.
MAGNUM OPUSFinish Ending 2 after changing the Relicta branch.
VIVUS EX MORTIBUSHidden: finish Ending 3 through the Bible route.
RENUNTIATIOHidden: finish Ending 4 through the lobby exit.

A route that reduces repetition

  1. On the main route, handle the early interactions and collectibles before their cutoffs. Read each newly available page of the Old Book; merely carrying it is not De Relictis.
  2. Use a pre-Fumus save for the Pipe-only challenge, then return to a clean Wrench-only branch if pursuing that run. Treat the separate weapon challenges as branch saves, not one continuous set of actions.
  3. Preserve the post-Aurifer save. Complete Ending 1 without killing any Relicta. Reload for Ending 2; for Heart of Lead, search every accessible floor rather than killing just the ghosts on the direct exit route.
  4. Use a new game for the Bible route to Ending 3. Follow the ending guide before solving the early TV and projector puzzles. The short Ending 4 has conflicting prerequisite reports; the conservative route is to complete both main endings first.

When an achievement does not appear

Check the platform's description and the action you actually performed. A boss kill is not the same as a no-damage kill, and one Relicta kill is enough to change the finale but not enough for Heart of Lead. Keep the save before a failed challenge so you can retry its exact trigger.

Launch-week player reports describe delayed unlocks and challenge interactions. They do not prove a universal bug or a guaranteed workaround. Do not erase a clean save to test a forum fix. Completion percentages are deliberately omitted because they measure rarity, not requirements.

Platform scope and sources

This checklist uses the Steam release and English achievement names. PS5 may add a platinum trophy; Xbox uses its own score and platform list. Do not assume those totals match Steam. Open your platform list before starting a completion run.

Checked October 23, 2026. Requirements are paraphrased from the platform data; route advice is source-checked rather than a claim of a personally completed 100% run.