Tenebris Somnia Walkthrough – Puzzles and Boss Tips

Tenebris Somnia presents players with intricate boss encounters and puzzles, often leading to missed items or interactions. Engaging with the challenges can be tricky, as various mechanics require precise execution, making it essential to understand the best methods for defeating bosses and solving key puzzles.

At certain points in the game, players may struggle or become frustrated if they overlook important clues or items. Familiarizing oneself with common traps and the mechanics of each encounter will save valuable resources and prevent unnecessary setbacks.

Before diving into the complexities of the game, it’s wise to check your inventory for essential items and upgrade your character as necessary. This preparation ensures you’re ready for the challenges that lie ahead.

Puzzles Guide and Boss Fight Walkthrough

This walkthrough includes valuable strategies for combat mechanics and effective solutions for puzzles encountered in Tenebris Somnia. Spoilers follow for significant puzzles and boss mechanics, especially towards the game’s climax.

Boss Fight Tips

1. Obscuratus Candle Fight

During the Obscuratus boss fight, the enemy remains invisible at the start. To unmask Obscuratus, interact with each lit candle around the arena until all are extinguished, which reveals the boss, enabling you to deal damage.

This process must be repeated several times throughout the fight, ensuring to extinguish the candles each time to maintain the upper hand until Obscuratus is defeated.

2. Fumus and the Red Circles

In the Fumus fight, be cautious of the red circles that appear on the ground. The effects vary based on your equipped weapon: If holding a loaded firearm, your character will accidentally shoot herself. With a melee weapon, she’ll harm herself. An unloaded firearm results in a long useless animation. The recommended strategy is to unequip all weapons before stepping into these circles, which causes them to disappear and lessens the threat in the arena.

3. Breaking Enemy Grapples

Certain enemies, including bosses, can initiate grapples that deal significant damage if not interrupted promptly. For example, during the Vitria fight, the boss can grab your character with tentacles, pulling closer for a fatal hit. When caught, rapidly press the interact button to escape the grapple before it’s too late.

4. Sanguis Beast Form

To defeat Sanguis in his Beast Form, lure him near the giant knife situated towards the end of the chase. Time your movements so that he lands on the knife, resulting in an impalement that concludes the fight and allows progression to the next area.

Some enemies and bosses can grab me and lock me into a grapple. These attacks are dangerous if I do not react quickly.

During the Vitria boss fight, for example, Vitria can grab Julia by the throat with a tentacle and slowly pull her closer until she can be killed instantly. Relicta ghosts can also grab me and drain my health while attached.

Whenever I am caught in one of these grapples, I rapidly press the interact button until I break free.

5. Studio Lights in Sulfur Fight

During battles against the Sulfur statue, glowing studio lights are present in the arena. If overwhelmed by enemies, break one of these lights using any weapon to instantly eliminate all on-screen foes. This tactic can also be applied in other gameplay moments when encountering these lights.

Puzzle Guide

1. Door Puzzle in Ivan’s Apartment

1. Enter the bathroom through the blue door by the Devora poster to obtain the Wrench.
2. Go to the kitchen via the grey door and collect the Developing Chemical.
3. Access Ivan’s bedroom through the door to the right of the TV.
4. Equip the Wrench and break the boarded window in the bedroom.
5. Collect the Glass from the nightstand after sunlight enters the room.
6. Use the Glass in front of the broken mirror to create Glass with Blood.
7. Combine Glass with Blood and Developing Chemical for Glass with Chemical and Blood.
8. Use this combination at the opened window to obtain Auritsatio.
9. Finally, use Auritsatio on the locked Study Door to unlock it.

1. Inspect the clothes rack in Ivan’s office to acquire the Glove.
2. Return to the kitchen and use the Glove on the circuit breaker.
3. After the power goes out, collect the first Battery.
4. Interact with the tub curtain in the bathroom to reveal the second Battery.
5. Leave the apartment and take the elevator to Floor 3, returning to an earlier version of Ivan’s apartment.
6. In Ivan’s office, use both Batteries on the TV remote.
7. Head back to the Floor 2 apartment, where the TV shows symbols. Match the displayed symbols to unlock the adjacent door.

Note: This puzzle is randomized, so the symbol order can change between playthroughs.

Puzzle Guide

3. Key Stuck in Door Puzzle

1. After the interaction with Sanguis, obtain the blue Triangular Stone from the candle arena on the right of the red candle.
2. Ensure possession of both the Scissor Blade and X-Ray before proceeding.
3. The Scissor Blade can be found on the kitchen counter, while the X-Ray resides on the bookshelf by the apartment’s front door.
4. Head towards the green Floor 2 elevator and use the Triangular Stone at the blue symbol door.
5. Within, approach the door marked A.S. and use the Scissor Blade followed by the X-Ray to retrieve the A.S. Key.

4. Poster Cutouts and Devora Picture Puzzle

1. Collect the second Scissor Blade from the director’s office desk. Combine both blades to form Scissors.
2. Locate poster cutouts in the hallway and use the Scissors on them to obtain Cardboard Pieces.
3. Gather all six Cardboard Pieces and return to the director’s office.
4. At the torn poster in the office, use one Cardboard Piece to initiate the next phase of the puzzle.
5. Reconstruct the Devora poster with all six Cardboard Pieces.
6. Burn the completed poster using the Lighter to acquire the Bathroom Key.
7. Head straight into the bathroom to collect the Mop Handle required for a later puzzle.

5. Where to Use the Mop Handle

3. Key Stuck in Door Puzzle

6. Glass Liquid Sound Puzzle

4. Poster Cutouts and Devora Picture Puzzle

1. I enter the director’s office, interact with the desk, and collect the second Scissor Blade. I combine both Scissor Blades to make Scissors.
2. I leave the office and look for poster cutouts in the hallway that appear out of place. I stand in front of each one and use the Scissors to obtain a Cardboard Piece.
3. I collect all six Cardboard Pieces from the hallway and return to the director’s office.
4. At the ripped poster in the back-left corner of the office, I use one Cardboard Piece to begin the next part of the puzzle.
5. I reconstruct the Devora poster using all six Cardboard Pieces.
6. Once the poster is complete, I use the Lighter on it. The poster burns and I receive the Bathroom Key.
7. I leave the director’s office and enter the bathroom directly to the left of its door.
8. Inside the bathroom, I collect the Mop Handle because it is needed later.

5. Where to Use the Mop Handle

1. I return to the Floor 2 apartment and go back to the area where I met Sanguis and collected the Triangular Stone.
2. In the candle arena, I stand beside the square on the wall near the windows.
3. I open my inventory and use the Mop Handle, then prepare for the fight that follows.

6. Glass Liquid Sound Puzzle

1. I go to the symbol door just left of the Floor 3 elevator and use the blue Triangular Stone.
2. Once outside, I head left, collect the first Bottle, and enter the bar.
3. Inside the bar, I collect another Bottle from the table, one from behind the bar, and one from the bathroom.
4. I return to the counter and ring the bell, paying attention to its tone.
5. At the large glass pitcher, I use Bottles to add liquid. Each Bottle changes the pitch. I hit the pitcher with the Wrench to hear its current tone and use empty Bottles when I need to remove liquid.
6. Once the pitcher matches the bell’s tone, I return to the bell and ring it again. The glass shatters and I can collect the USB Cable.

7. Projector Room Puzzle

7. Projector Room Puzzle

1. I take the elevator to the 1st Floor and head right to Door 6.
2. I walk to the far-right side of the room and enter through the doorway where light is shining through.
3. In the dining room, I use the third door on the right.
4. I climb the staircase to the top and collect the USB Adapter from the floor near the boarded door.
5. I combine the USB Cable with the USB Adapter to create the USB Charger.
6. I return to Ivan’s apartment on Floor 3 and enter the purple door to the left of the broken TV.
7. On the right side of the room, I stand beside the wall outlet and Ivan’s phone and use the USB Charger. This gives me the projector room code.
8. I return to the 1st Floor, go left to Door A, and enter the code to unlock the door. If I forget the code, I can check the Old Book in my inventory.