Tenebris Somnia Guide | All Ivan's Apartment Puzzles (Part 1)

This Tenebris Somnia guide explains how to solve the first eight apartment puzzles: Study Door, TV Remote, A.S. Key, Devora Poster, Glass Pitcher, Projector Room, and Dinner Plate. Follow the steps below to collect the required items, unlock new rooms, and progress through the story.

How to Solve the Study Door Puzzle

The Study Door requires Auritsatio, which you must create using items found in Ivan's apartment.

• Enter the bathroom and collect the Wrench from the bathtub.
• Go to the kitchen and collect the Developing Chemical.
• Enter the bedroom and use the Wrench to remove the boards covering the window.
• Collect the Glass from the nightstand.
• Return to the bathroom and use the Glass on the broken mirror to collect blood.
• Combine the Glass with Blood with the Developing Chemical.
• Return to the bedroom and use the mixture at the exposed window to obtain Auritsatio.
• Use Auritsatio on the sealed Study Door to open it.

How to Solve the TV Remote Puzzle

You need two Batteries to power the TV Remote and reveal the symbol sequence.

• On Floor 2, enter Ivan's office and collect the Glove from the clothes rack.
• Return to the kitchen and use the Glove on the Fuse Box.
• Once the washing machine stops, collect the first Battery.
• Go to the bathroom and look behind the shower curtain to find the second Battery.
• Take the elevator to Floor 3 and return to Ivan's earlier apartment.
• Enter the office and use both Batteries on the TV Remote.
• Return to Floor 2 and examine the television.
• Follow the symbol sequence displayed on the TV to unlock the door beside it.

The sequence is randomized, so use the symbols shown in your own playthrough rather than copying another player's solution.

How to Get the A.S. Key

The A.S. Key is hidden behind a door and requires the Blue Triangular Stone, Scissor Blade, and X-Ray.

After speaking to Sanguis, collect the Blue Triangular Stone beside the red candle in the candle arena.

• Find the Scissor Blade on the kitchen counter.
• Collect the X-Ray from the bookshelf near the apartment entrance.
• Use the Blue Triangular Stone on the blue-symbol door near the Floor 2 elevator.
• Approach the door marked A.S., identifiable by the red carpet underneath it.

Use the Scissor Blade on the door, then use the X-Ray to retrieve the A.S. Key.

How to Solve the Devora Poster Puzzle

Reconstruct Devora's torn poster to obtain the Bathroom Key.

• Find the second Scissor Blade in the director's office.
• Combine both Scissor Blades in your inventory to make Scissors.
• Search the hallway for six misplaced poster cutouts.
• Use the Scissors on each cutout to collect all six Cardboard Pieces.
• Return to the director's office and use the pieces to reconstruct the torn poster.
• Use the Lighter on the completed poster to obtain the Bathroom Key.

Unlock the bathroom near the director's office and collect the Mop Handle.

Where to Use the Mop Handle

After collecting the Mop Handle, return to the candle arena where you met Sanguis and found the Blue Triangular Stone.

Use the Mop Handle on the square beside the windows to trigger the next encounter and continue progressing through the building.

How to Solve the Glass Pitcher Sound Puzzle

The Glass Pitcher puzzle requires you to match a pitcher's pitch to a bell's sound. The correct liquid combination can vary between playthroughs.

• Use the Blue Triangular Stone on the blue-symbol door to the left of the Floor 3 elevator.
• Once outside, collect the Bottle on the left.
• Enter the bar and collect three more Bottles: one from the table, one behind the bar, and one in the bathroom.
• Ring the counter bell and remember its sound.
• Use the Bottles on the glass pitcher to add liquid.
• Strike the pitcher with the Wrench to hear its current pitch.
• Add or remove liquid using the Bottles until the pitch matches the bell.
• Ring the bell again. If the pitches match, the pitcher shatters, and you can collect the USB Cable.

Listen carefully after each change. The goal is to match the bell, not to use a fixed liquid combination.

How to Unlock the Projector Room

You need the USB Cable and USB Adapter to chargeIvan'ss phone and discover the Projector Room code.

• Take the elevator to Floor 1 and enter Door 6.
• Enter the illuminated doorway to reach the dining room.
• Go through the third door on the right and climb the staircase.
• Collect the USB Adapter near the boarded-up door.
• Combine the USB Adapter with the USB Cable to create the USB Charger.
• Return to Floor 3 and enter the purple door to the left of the broken TV.
• Use the USB Charger on Ivan's phone beside the wall outlet.
• Check your Old Book for the Projector Room code.
• Return to Floor 1 and enter Door A.

Input the code to unlock the Projector Room.

How to Solve the Dinner Plate Puzzle

The Dinner Plate puzzle requires the Plate with X and Black Tape. Solving it opens the central double doors and rewards you with the Green Square Stone.

• Collect the Devora 1 Film Canister from the chest in Ivan's office on Floor 2.
• Take the canister to the Projector Room and use it on the projector.
• Enter the theater through the double doors and collect the Plate with X from the newly opened box on the left.
• Return to Floor 1 and enter the dining room through Door 6.
• Go through the third door on the right and climb the staircase.
• Enter the first door on the stairs and collect the Black Tape from the counter.
• Return to the dining room and use the Black Tape on the upper-left plate.
• Place the Plate with X in the space below it.
• Enter the central double doors and collect the Green Square Stone.
• Return to Floor 3 and use the stone on the green-symbol door in Ivan's apartment.

Collect the White Candle from the dresser inside.

Final Thoughts

The first eight puzzles in Tenebris Somnia revolve around finding items, combining tools, and using clues to unlock new areas. Keep track of important objects and check your Old Book whenever you need a code. For randomized puzzles like the TV Remote and Glass Pitcher, rely on in-game clues rather than a fixed solution.

FAQ

Q. How do you unlock the Study Door in Tenebris Somnia?

A. Collect the Wrench, Developing Chemical, and Glass. Use the Glass on the broken bathroom mirror to collect blood, combine it with the chemical, and expose the mixture to sunlight through the bedroom window to obtain Auritsatio.

Q. How do you solve the TV Remote puzzle?

A. Find two Batteries in the Floor 2 apartment, then use them on the remote in the earlier version of Ivan's apartment on Floor 3. Return to Floor 2 and follow the symbol sequence displayed on the television.

Q. Where do you find the A.S. Key?

A. Use the Blue Triangular Stone to enter the blue-symbol door near the Floor 2 elevator. Use the Scissor Blade and X-Ray on the door marked A.S. to retrieve the key.

Q. How do you get the Bathroom Key?

A. Collect six Cardboard Pieces by cutting misplaced poster cutouts with the Scissors. Reconstruct Devora's poster in the director's office, then use the Lighter on it to get the Bathroom Key.

Q. Where do you use the Mop Handle?

A. Return to the candle arena and use the Mop Handle on the square beside the windows to trigger the next encounter.

Q. How do you solve the Glass Pitcher puzzle?

A. Ring the bell to hear its pitch, then add or remove liquid from the glass pitcher using the Bottles. Strike the pitcher with the Wrench until its sound matches the bell.

Q. How do you find the Projector Room code?

A. Combine the USB Cable with the USB Adapter to make a USB Charger. Use it on Ivan's phone beside the wall outlet in the purple room on Floor 3, then check your Old Book for the code.