Start at Ivan's third-floor apartment and prepare Aurisatio to dissolve the red studio seal. Each objective below links to the page that solves it, from Ivan's studio recipe to the final confrontation, so you can use this Tenebris Somnia guide to jump straight to where you are. For the TV door, return to the studio remote with both batteries; for later filming puzzles, collect the reward beside the movie screen after each screening. If you want the chapter order before exploring, begin with the walkthrough.
Enter the Desiderium: Dissolve the Studio Seal and Open AS Films
Your first goal is opening Ivan's studio. After that, the television and engraved-symbol doors lead you farther through the apartment memories.
- Ivan's apartment walkthrough: collect the wrench, refrigerated developing chemical, and bedroom glass. Add Julia's own blood and expose the mixture to sunlight to make Aurisatio, then dissolve the studio seal and collect the green candle.
- Second floor walkthrough: use the Triangular stone at matching symbol doors, retrieve the AS key from beneath its door, and rebuild and burn the Débora poster for the Bathroom key.
- TV puzzle: find both batteries, install them in the remote attached to Ivan's third-floor studio table, and press its button. Back downstairs, step on the floor tile matching each symbol the TV shows.
Reach the Lower Floors: Charge the Phone and Claim Film Rewards
The filming route sends you between the set, Ivan's apartment, and the cultural center. Keep the screening rewards in mind: watching Débora opens boxes beside the movie screen, and those items unlock later obstacles.
- First floor walkthrough: match the bar apparatus's sound to obtain the USB cable, combine it with the USB Adapter, and charge Ivan's phone for projector-room code 5160. Screen the first film, collect the Plate with an X, and solve the dining-table puzzle for the Square Stone. Its matching third-floor door leads to the White Candle.
- Film school walkthrough: enter Floor 0 with the lit White Candle, repair the electrical puzzle for the RCA cable, and complete Ivan's camera scene. Use the Black Candle and the recorded television colors to unlock Floor -1, collect the film beside young Ivan, and screen it for the skull that opens the hooked door.
Recover Julia's Memories: Unlock the Stone Door and Purify the Key
The premiere photograph opens the way to the Agonal stone. After the mirror encounter, Julia's altered memories become your next destination.
- Agonal stone walkthrough: restore the photograph to the third-floor bedroom frame, collect the stone from the drawer, and open the sealed entrance near Ivan. Follow the mirror-fight instructions for Vitria, then continue into Julia's Desiderium.
- Julia's Desiderium walkthrough: turn the blue RCA cable yellow, recover Julia's belongings, and purify the enchanted apartment key. Leaving it behind restores memories and makes the old book readable; revisit the script-table memory for the Red candle and reach the screening-room statue for the Lead fly.
After Julia's Desiderium, return to the Agonal stone guide's Sanguis chase section. Use the corridor trap to end the pursuit before continuing toward the weapon recipe.
Prepare for the Final Door: Forge the Golden Blade and Accept Vitria's Spell
Sunlight completes Aurisatio; moonlight completes the Aurifer. Keep those requirements separate as you prepare the knife and approach the cinema barrier.
- Aurifer walkthrough: prepare Aurisatio with Julia's blood and burned developed film to free the Lapis Fictus knife from Ivan's statue. Treat the weapon with electricity, mercury from Putrefactio, and finally moonlight to forge the golden blade.
- Final boss guide: check the Relicta Ghost choice before entering Septimo Arte. Killing any ghost leads to Hermes; sparing every ghost leads to Lacuna. Accept Vitria's spell to cross the sealed door, then follow the Hermes fight instructions if you took that route. Retreat as far as possible during his inhale.
Quick Answers: Puzzles, Bosses and Collectibles
Already know where you are and just need the answer? These pages skip the route and give it straight.
- Puzzle solutions: every puzzle answer in story order, from the Aurisatio recipe and the TV puzzle to the projector room code and the Aurifer recipe.
- Bosses: the one trick for Vitria, Sanguis and Hermes, plus how to get Lacuna instead.
- Collectibles: all three Débora film cans, the star key locks and where to unscrew the Pipe.