Tenebris Somnia Floor 3 Walkthrough

The first Floor 3 objective is to enter Ivan’s sealed Study in Apartment B. You need Auritsatio, made from the apartment’s glass, blood, developing chemical and sunlight. This route ends when you leave for Floor 2; it does not cover every later return to Floor 3.

Enter Apartment B and gather the essentials

From the opening elevator ride, walk right to Apartment B and use the Apartment Key from your inventory. Inside, take the Old Book near the bedroom entrance. Then search the three accessible rooms:

The Study Door’s red seal is the obstacle, but the required preparation happens elsewhere. Keep the room names separate from the different-colored doors you will see after opening the Study.

Make the substance for the Study Door

For individual hints and inventory-state checks, use the chemical puzzle guide. The sequence above follows the blood-first method consistently described by multiple release-build guides; it does not require guessing whether an alternative mixing order also works.

Search the Study before leaving

Use the flame save point. Inspect the writing on the wall to obtain the Green Candle. Also inspect the powerless TV Remote and discharged phone so you know where to return later. You cannot complete their dependencies on this first visit.

Return to the living room and collect the nearby healing bottle if needed. The apartment changes, and leaving triggers a cinematic followed by a hostile encounter. Equip the Wrench for the fight, then return to the elevator and continue to Floor 2. The following sequence introduces the Lighter.

If you are stuck

The Glass is filled, but the door stays sealed. Check the exact inventory name. The mixture must become Auritsatio at the exposed bedroom window before it can dissolve the seal.

The window interaction does nothing. The Wrench action is an attack against the low board. The later mixture action is an inventory use at the sunlight. They are different interactions.

The remote has no power. That is a later dependency, not a missing Floor 3 pickup. Continue with the Floor 2 route to obtain the batteries.

Coverage and evidence

This is an opening-area route for the full game, cross-checked against release-week walkthroughs. We have not verified an exact installed build or reproduced these steps in the updated demo. Return to the walkthrough index for the current coverage map.