Tenebris Somnia Endings Explained: How to Unlock All Four Outcomes

Tenebris Somnia Endings Explained: The Four Outcomes at a Glance

Tenebris Somnia hides four endings behind one easily missed decision — and if you have rolled credits wondering where the other three went, this Tenebris Somnia endings explained guide is for you. Two outcomes hinge entirely on whether Julia kills a fleeing Relicta ghost with the Aurifer knife, while the other two are secret routes that only open after you finish the main story. Below, every Tenebris Somnia endings explained step is broken down in playable order so you can clear all four achievements without wasting a run.

The game tracks each ending with a matching achievement, so the names below are exactly what you will see pop on screen. Before diving in, it helps to know that the two main endings share a single branch point — the moment you forge the Aurifer — while the hidden routes require a fresh save and specific early-game actions.

For platform details and patch notes, check the official Tenebris Somnia Steam page.

Solve Et Coagula — Spare the Relicta for the Good Ending

This is the route most players stumble into first, and it is also the one that is easiest to break by accident. Once you have bathed the Lapis Fictus Knife in electricity, mercury, and moonlight to forge the Aurifer, Relicta ghosts stop hunting you. Instead, they flee on sight.

Do not swing at them. Not once, not to test the hitbox. Walk past every Relicta between the hotel and the Septimo Arte building and continue into the finale. Your reward is the Lacuna fight, a two-phase boss where the game takes the Aurifer away from you entirely.

How to Beat Lacuna Without the Aurifer

Because you lose the knife for this encounter, ranged weapons carry the fight. Stock shotgun and revolver ammo before you enter the theater.

• In phase one, Lacuna swipes with tendrils and sometimes vanishes to slam down on your position — keep moving while she is off-screen to avoid the instant kill.
• When she spits a swarm of flies from her mouth, close the distance instead of backing off; hugging her body is the safe spot.
• In phase two, watch the movie screen to spot Julia clones and incoming flies, then unload on Lacuna while dodging the damaging trail she leaves behind.

Finish her and you unlock Solve Et Coagula. If you are ever unsure whether a Relicta died to a stray shot, reload a save from before the encounter rather than risking a silent route flip.

Magnum Opus — Kill a Relicta for the Bad Ending

Magnum Opus is the mirror image of the good ending, and it is significantly less demanding. After forging the Aurifer, find any Relicta ghost in the hotel or along the street route and kill it with the knife. One confirmed kill is enough — you do not need to clear the map.

From that point, the finale branches. Instead of Lacuna, you face Hermes, and this time you keep the Aurifer.

How to Beat Hermes

The Hermes fight is a positioning test more than a damage check.

• Phase one revolves around giant hands erupting from the floor. Look for the runic symbol that marks where a hand will appear, then hit it with the Aurifer or gunfire.
• Watch the eye flash to read whether an incoming blast is vertical or horizontal, and use the movie screen to predict the sweeping wave of hands.
• Phase two adds a giant face in the screen that inhales. Sprint away during the suction, then punish with quick hits once it stops, and keep clear of the red liquid erupting from the arena floor.

Kill Hermes and Magnum Opus is yours.

Get Both Main Endings From a Single Save

This is the single most useful tip in any Tenebris Somnia endings explained breakdown. Create a manual save immediately after the Aurifer is forged, before any Relicta dies. Complete the Lacuna route first for Solve Et Coagula, then reload that save, kill one Relicta, and finish the Hermes route for Magnum Opus. You skip every puzzle in the back half of the game.

Vivus Ex Mortibus — The Bible and Three Iron Crosses Route

Vivus Ex Mortibus is the deepest secret in the game, and it will not activate until Solve Et Coagula and Magnum Opus are both on your profile. Start a brand-new game afterward — the hidden encounters will not trigger on a completed save.

The first thing to grab is the Bible, sitting on the glass table in the ground-floor lobby near the start. Keep it in your inventory, because each of the three hidden encounters is triggered by using the Bible before you solve the corresponding puzzle the normal way.

Iron Cross #1 — Second-Floor Apartment

Use the Bible in the living room of the second-floor apartment before touching the TV puzzle. Step onto the Man/Mars symbol on the planetary circle and run counterclockwise around it six times. Enemies spawn; clear them and pick up the first Iron Cross. Solving the TV puzzle normally removes the Bible from your inventory, so doing this out of order can cost you the cross for that run.

Iron Cross #2 — Community Center Projector Lock

On the first floor, use the Bible on the projector-room lock rather than opening it conventionally, then enter the code 6666. Defeat the enemies that appear and claim the second cross. Opening that lock the ordinary way first may lock you out of the encounter.

Iron Cross #3 — Floor 0 Green Door

Head through the green door into the cinematography room and use the Bible, then connect the yellow RCA cable to the camera and cycle channels until enemies spawn. Clear them for the third cross. This must happen before you go through the Copper Key door.

Unlock the Secret Door and Beat Amy

With all three Iron Crosses in hand, return to the third floor and enter the blue door to the left of the elevator. Insert the crosses at the marked wall to open the hidden passage, then fight through the secret route to a boss encounter against Amy, a character tied to the FAITH games. Defeat her to unlock Vivus Ex Mortibus. If the door refuses to open, confirm that all three crosses came from the same playthrough.

Renuntiatio — Leave the Building for the Fourth Ending

The fourth ending is the fastest one in the game, but only once the prerequisites are done. Solve Et Coagula and Magnum Opus must both be unlocked first, otherwise the interaction simply will not resolve.

Start a new game and let the opening sequence finish. In the ground-floor lobby, walk to the glass entrance door on the left side of the room, open your inventory, and use the Apartment Key on the front entrance instead of heading for the elevator to Ivan's apartment. Julia walks out of the building and the ending plays. No Bible, no puzzles, no boss.

Fastest Order to Unlock All Four

Community reports and published route guides agree on one efficient sequence:

1. Reach the Aurifer, save manually, and finish the Lacuna route for Solve Et Coagula.
2. Reload that save, kill one Relicta, and finish Hermes for Magnum Opus.
3. Start a new game, use the key on the front door immediately for Renuntiatio.
4. Start another new game and run the Bible encounters for Vivus Ex Mortibus.

That covers all four endings with roughly two and a half playthroughs of content. Following this order means the Tenebris Somnia endings explained above never require a third full clear of the film school or apartment puzzles.

Tenebris Somnia Endings Explained: FAQ

Which ending is the good one in Tenebris Somnia?

Solve Et Coagula is the good ending: spare every Relicta ghost after forging the Aurifer and defeat Lacuna. The bad ending, Magnum Opus, requires killing at least one Relicta and beating Hermes.

Can I unlock two endings in one playthrough?

Yes. Save manually right after the Aurifer is forged, before any Relicta dies. Finish the no-kill route first, then reload and take the kill route. Both Tenebris Somnia endings explained here share that single branch point, so the save trick saves hours.

How do I start the Vivus Ex Mortibus secret route?

Complete both main endings, start a new game, collect the Bible from the ground-floor lobby, and trigger the three hidden encounters — the planetary circle, the 6666 projector lock, and the camera channel sequence — to earn three Iron Crosses. Place them at the third-floor blue door.

Why did Renuntiatio not trigger for me?

The fourth ending only works after Solve Et Coagula and Magnum Opus are already unlocked. Once they are, start a fresh game and use the Apartment Key on the building's glass front entrance in the lobby instead of taking the elevator.