Tenebris Somnia Endings Guide: How to Unlock All Four Endings Fast

If you rolled credits on Tenebris Somnia and walked away with a single ending, you've seen roughly a quarter of what the game is hiding. There are four Tenebris Somnia endings in total, each tied to its own achievement, and two of them won't unlock at all until you've cleared the first pair. That's the catch that catches most players off guard: the secret routes are gated behind completion, not just a last-minute choice.

This guide walks through every one of the Tenebris Somnia endings, from the good-versus-bad split at the Séptimo Arte theater to the two hidden routes that require a fresh save file. Along the way you'll get the exact rituals, the puzzle deadlines you can't miss, and the fastest order to knock all four out.

All Four Tenebris Somnia Endings at a Glance

Every ending has its own achievement, and only the first two are decided by your behavior in the final stretch of the story. The other two are hidden endings that only become available after Solve et Coagula and Magnum Opus are already in your achievement list.

The good/bad pair is the only one you can split from a single save file. Plan for at least two additional playthroughs if you want the full set.

Solve et Coagula: Spare the Relicta for the Good Ending

This is the ending most players stumble into first, and it's entirely about restraint.

1. Play the main story until you forge the Aurifer. That means working the Lapis Fictus knife through its full chain: charged at the fuse box to become the Melanosis knife, dipped in mercury for the Viridis knife, then bathed in moonlight to produce the Aurifer.
2. Make a manual save the moment you have the Aurifer. This single save is what lets you grab both main endings without replaying the game.
3. Head toward the Séptimo Arte theater. Relicta ghosts will now flee from you rather than attack.
4. Do not attack a single one. Run past them, dodge, and keep moving.
5. At the finale, you'll face Lacuna instead of Hermes. Beat her and the Solve et Coagula achievement pops.

One kill is enough to lock you out of this ending for the rest of the run, so if you're unsure whether a swing connected, reload your manual save. Community guides also flag that you fight Lacuna without the Aurifer in hand, so bring plenty of Shotgun and Revolver ammo and lean on ranged damage.

Magnum Opus: Kill a Relicta for the Bad Ending

Magnum Opus is the mirror image of the good ending, and it's the easier of the two to trigger by accident.

• Reload the manual save you made after obtaining the Aurifer.
• Find any Relicta ghost and kill it with the Aurifer. Hitting it isn't enough — the kill has to register.
• You don't need to wipe out the whole population. One confirmed kill flips the finale.
• Continue to the Séptimo Arte building and defeat Hermes. The Aurifer is your primary weapon in this fight, so use it on the giant hands and finish him off up close.

Because the switch is permanent within a run, this is the route to take after you've banked Solve et Coagula.

Getting both main endings on one save

Complete the good ending first, let the achievement appear, then reload the save you made right after forging the Aurifer. Kill a Relicta and finish the alternate finale for Magnum Opus. You skip every earlier puzzle and only repeat the last section.

Vivus ex Mortibus: Bible, Three Iron Crosses, and Amy

This is where the real work starts. Vivus ex Mortibus requires Solve et Coagula and Magnum Opus to be completed first, then a brand-new game. On that new run, collect the Bible early — guides point to the glass table in the ground-floor lobby at the start of the game — and keep it in your inventory.

The Bible is what triggers three hidden encounters, and each one rewards an Iron Cross. The catch: each encounter must be triggered before you solve the matching puzzle the normal way, because some puzzles strip the Bible from your inventory.

With all three crosses in hand, head to the third floor and find the blue door to the left of the elevator. Insert the crosses into the marked spot to open the secret doorway, then push through the hidden route to a boss fight against Amy — a character community guides describe as tied to the FAITH games. Win, and Vivus ex Mortibus is yours.

If the secret door refuses to open, the usual culprit is a cross collected in a different playthrough. All three must come from the same run.

Renuntiatio: Walk Out the Front Door

The fourth ending is the shortest and the easiest to miss, because it asks you to abandon the story entirely. It also requires both main endings to be finished before the option becomes available.

1. Start a new game and let the opening sequence finish.
2. Stay in the ground-floor lobby and locate the building's glass entrance door on the left side of the room.
3. Open your inventory and select the Apartment Key.
4. Use the key on the front entrance instead of taking the elevator up to Ivan's apartment.
5. Julia walks out of the building, the ending sequence plays, and Renuntiatio unlocks.

No Bible, no apartment puzzles, no boss fights. If you're cleaning up achievements, this is a five-minute detour once the prerequisites are done.

Fastest Order to Unlock All Tenebris Somnia Endings

Following this order keeps repeated content to a minimum:

1. Play normally to the Aurifer, then manual save. Forge the knife fully before touching the Relicta.
2. Spare everything and beat Lacuna for Solve et Coagula.
3. Reload the manual save, kill one Relicta, and beat Hermes for Magnum Opus.
4. Start a new game and use the Apartment Key on the front door for Renuntiatio — do this before the longer secret run.
5. Start one final new game for Vivus ex Mortibus: grab the Bible, collect all three Iron Crosses, and defeat Amy.

That's two full playthroughs plus two short ones, rather than four complete runs. For details on the base game itself, see Tenebris Somnia on Steam.

FAQ

Which Tenebris Somnia ending is considered the good one? Solve et Coagula. You must spare every Relicta ghost after obtaining the Aurifer, then defeat Lacuna at the Séptimo Arte theater.

Can I unlock multiple Tenebris Somnia endings in a single playthrough? Only the two main ones. Save manually right after forging the Aurifer, finish the no-kill route, then reload and kill a Relicta for the alternate finale. Vivus ex Mortibus and Renuntiatio both require a new game and the first two endings already unlocked.

Why won't the secret door open for Vivus ex Mortibus? Either you're missing a cross or you collected them across different saves. All three Iron Crosses have to be earned in the same playthrough, and each Bible encounter must be triggered before you solve its puzzle normally.

How long does Renuntiatio take? Just a few minutes. Start a new game, wait for the opening to end, and use the Apartment Key on the lobby's glass front door instead of heading upstairs.