Tenebris Somnia: How to Solve Part 1 Puzzles and Beat Candlehead

The Old Book is the thread connecting Julia’s early search through Ivan’s apartment building. As she investigates her ex-boyfriend after recurring nightmares, its pages supply clues for the sealed study and later puzzles. Read every available page when you find it on Floor 3; the apartment’s ordinary-looking objects become useful through combinations, heat, and interactions in specific rooms.

Follow the route below from the apartment entrance, or jump to the sealed-study mixture or Candlehead fight. The walkthrough hub section separates this opening route from the later puzzles.

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Enter Ivan’s apartment and prepare for the first creature

Use the apartment key to enter Ivan’s apartment on the third floor. Before attempting to leave, collect two essential items:

• Old Book: Search the living room and read every available page. Return to it when a puzzle refers to a sequence or an unusual ingredient.
• Wrench: Take it from the bathtub in the bathroom, then equip it before leaving the apartment.

The first creature encounter follows your departure. Keep enough distance to avoid contact, let it finish an approach or attack, then strike with the Wrench. It takes approximately three or four successful hits. Back away between openings rather than staying beside it and trading blows.

Keep the Wrench afterward. It also breaks the board covering the bedroom window, which matters when the next puzzle requires sunlight.

Open the sealed study: community-sourced mixture solution

The red, wax-like seal on the study door requires a prepared, heated compound. Finding the Chemical Reagent alone does not finish the puzzle: you need a container, Julia’s blood, and sunlight.

1. Find the Glass and Chemical Reagent. Search the apartment’s connected rooms, then combine these two items.
2. Obtain a drop of Julia’s blood. Use the mirror interaction and add the blood to the mixture. This supplies the iron-related component indicated by the clue.
3. Expose the bedroom window. Use the Wrench to break the board blocking it and let sunlight into the room.
4. Heat the mixture. Place the glass by the window so the sunlight heats the liquid, then collect the resulting hot chemical compound.
5. Return to the study door. Apply the heated compound to the red seal to open the route.

If the seal does not react, work backward through those ingredients and the heating step. An unheated mixture or the reagent by itself is short of the required item chain.

Inside the study, read the documents and inspect the objects before moving on. Puzzle order and item placement can differ between builds or walkthrough versions. When an expected interaction fails, examine the nearby objects and reread the Old Book rather than assuming that having an item in your inventory has completed its preparation.

Floor 2: collect the Revolver and check for the TV remote

The Floor 2 route includes the pressure-plate and TV section, along with a crucial weapon pickup: the Revolver is inside the Floor 2 Study chest. Collect it before triggering the bedroom boss encounter.

Keep the two studies distinct. The sealed study on Floor 3 is part of the chemical-mixture puzzle; the Floor 2 Study chest is where you obtain the firearm used against the Candle Boss.

Community-sourced TV tip: If the screen changes too quickly to read its sequence, search for the TV remote. Do that before relying entirely on recording the screen and trying to decipher individual frames. The remote is the practical lead to follow when the changing display becomes the obstacle.

Solve the Blue Door six-piece poster puzzle

The Blue Door production-company section contains a poster puzzle built around six Cardboard Pieces. This is a shape-matching task, so look at the gaps and outlines rather than searching for a numerical password.

1. Search the area for the six relevant cardboard cutouts with missing or incorrect pieces.
2. Use the Scissors on each relevant cutout and collect all six Cardboard Pieces.
3. Return to the office and inspect the torn poster at the back of the room.
4. Fit each piece into the corresponding gap, matching its outline and image to the surrounding poster.

If you are short of a piece, revisit the cutouts and use the Scissors on any you only examined. Inspecting a cutout and actually collecting its piece are separate actions.

How to beat Candlehead, the first boss

Candlehead, also called the Candle Boss, is protected while the room’s candles remain lit. Extinguish every lit candle before attacking with the Revolver. Shooting while its protection is active does not advance the fight.

The encounter begins after the bedroom-blinds interaction. Obtain the Mop and use it to close the blinds when you are ready to trigger the boss.

1. Make the candles your first objective. Move around the room and interact with each lit candle to snuff it out.
2. Check that every candle is extinguished. Leaving one burning keeps the boss protected.
3. Attack the exposed boss with the Revolver. Save your shots for this vulnerability window.
4. Move after attacking. Avoid remaining directly in front of Candlehead while waiting for another opening.
5. Repeat the exposure-and-attack cycle as needed until the boss is defeated.

If your attacks are ineffective, check the room’s candles before changing weapons or trying to shoot faster. The fight’s main requirement is removing its environmental protection.

Use the Red Candle to unlock the elevator

After defeating Candlehead, pick up the Red Candle from the center of the room. Combine it with the Lighter, then place the lit candle inside the elevator. This activates access to the first floor.

Do not leave the boss room without collecting that candle. Defeating Candlehead and activating the elevator are separate progression steps; the lit Red Candle connects them.

Walkthrough hub: what comes after Part 1

This route ends with the elevator opening access to the first floor. Later puzzle topics include the USB Adapter and USB Cable combination, the TV Room color pattern, and an elevator floor-order solution tied to the Old Book. Those belong to the continuing route rather than the opening study puzzle.

Part 3 picks up after Julia finds the Cold Chisel in the Movie Theater. Its route covers the Red Light Bulb, photo developing, the three-phase Vitria fight, the Iron Key, and the Lapis Fictus Pill and escape from Sanguis. Keep those later item chains separate when troubleshooting a blocked interaction in Ivan’s apartment.

For the opening route, arrive at Candlehead with the Revolver already collected and treat the candles as the priority. That preparation leaves you with a clear fight sequence: extinguish, expose, shoot, then use the Red Candle to move on.