Tenebris Somnia items: where to find every item and what it's for

How to read this page: item names are spelled the way the game shows them. Entries marked (location inferred) come from the full walkthrough’s inventory text and a text guide rather than a clear pickup shot; entries marked not confirmed are things no source showed us properly. The game has no map, so each spot is described by floor and room.

Screwdriver and Iron Pipe (optional)

The Screwdriver isn’t a puzzle; it’s an optional tool that gets you an optional weapon.

Screwdriver: on the boxes up the stairwell behind the 1st-floor dining room, the same climb where you find the USB Adapter and the Black Tape. (location inferred)
Iron Pipe: fixed by a large screw to the wall of the bathroom in the Septimo Arte bar (reached through the blue door left of the 3rd-floor elevator). Use the Screwdriver on it to take it. The Pipe is a melee weapon. Picking it up unlocks the Classics Never Die achievement, and beating Fumus with only the Pipe unlocks Exhaust Pipe.

Julia in the 1st-floor dining room with the long table set for dinner — Frame from “Tenebris Somnia Full Game Walkthrough - All 4 Endings [No Commentary]” by iampanax. Watch at 1:11:36

Julia in the small blue bar bathroom next to the red pipe on the wall — Frame from “Tenebris Somnia Full Game Walkthrough - All 4 Endings [No Commentary]” by iampanax. Watch at 58:18

Weapons

Item	Where to find it	What it’s for
Wrench	Iván’s 3rd-floor bathroom, behind the shower curtain	Your first melee weapon; also breaks the boarded bedroom window (study door). Achievements Wrench Queen (finish the game using only the wrench) and Iron and wax (beat Obscuratus with only the wrench)
Iron Pipe	Bar bathroom wall, freed with the Screwdriver	Optional melee weapon (see above)
Revolver	A prop revolver from the film that turned real; in the Desiderium kitchen area per the puzzle guide (location inferred)	Ranged weapon, uses Revolver Ammo
Shotgun	Mid-game; exact spot not confirmed	Ranged weapon, uses Shotgun Shells
Lapis Fictus / Melanosis / Viridis Knife, Aurifer	Forged step by step in the Desiderium	Story weapons; see Lapis Fictus knife and Aurifer knife. Killing a Relicta ghost with the Aurifer decides the ending (endings)

Healing and ammo

Item	Where to find it	What it does
Lavendoleum	Throughout the building	Heals a little. Drinking one at full health unlocks One More For The Road
Aqua Vitae	Throughout the building	Heals you completely
Revolver Ammo	Throughout the building	Revolver ammunition (“this ammo sure is real”)
Shotgun Shells	Throughout the building	Shotgun ammunition

Keys and door stones

The coloured stones open the doors marked with the same symbol. Some crumble after use.

Item	Where to find it	What it opens
Apartment Key	In your inventory from the start	Iván’s 3rd-floor apartment; later the goop in the Desiderium film school. On the lobby’s front door it triggers Ending 4
Triangular Stone (blue)	Outside the 2nd-floor bedroom window, by the red candle, after you meet Sanguis	Blue symbol doors left of the elevator on the 2nd and 3rd floors
A.S. Key	Pushed out of the A.S. door’s lock (key stuck in door)	The director’s (A.S.) office
Bathroom Key	Inside the burned DEVORA poster (poster cutouts)	Bathroom next to the director’s office
Square Stone (green)	Behind the middle double door of the 1st-floor dining room (dinner plate)	Green symbol door in the 3rd-floor apartment (crumbles after use)
Copper Key	On the chair in the cinematography room (cinematography camera)	Green door to the TV room
Cow Skull	Theater box opened by Film Canister 2 (location inferred)	White door at the left end of the hallway up the dining-room stairs; Fumus waits behind it (cow skull door)
Red Pentacle Stone	Dropped by Fumus	3rd-floor apartment bathroom, then the hotel-room door left of the 2nd-floor elevator (crumbles after the second use)
Silver Key	From Sanguis, after you go through all of his SPELL dialogue	Cage in the 2nd-floor apartment bathroom
Hexagonal Stone	3rd-floor bedroom drawer, once the developed photo is in the frame (photo development)	Symbol door of the film school on the 2nd floor
Lead Fly	Room that opens after the fly-statue puzzle (lead fly tiles)	Door with the fly insignia (Desiderium)
Tin Key	Hanging on the wire after the Carnitos fight (tin key)	A locked door, then the theater box with the Green Candle
Lead Key	Dropped by the TV when you try to leave the mercury pit (location inferred)	Symbol door of the studio lobby left of the 2nd-floor elevator (Desiderium)

Puzzle items, in the order you meet them

Item	Where to find it	What it’s for
Old Book (De Relictis, by Pietranera)	Floor of Iván’s 3rd-floor apartment	Your clue journal: recipes, the padlock code once you find it, the elevator colour legend. Reading every page unlocks De Relictis
Developing Chemical	3rd-floor apartment kitchen fridge	Mixed with your blood for the study door
Glass	3rd-floor bedroom, beside the lamp	Used at the bathroom mirror to collect blood
Auritsatio	Made in sunlight from the glass of blood and chemical (and again in the Desiderium)	Dissolves the red Lapis Fictus seals
Glove	Clothes rack in the 2nd-floor office	Lets you touch the kitchen circuit breaker (TV remote)
Battery ×2	2nd-floor washing machine (after the breaker) and behind the 2nd-floor shower curtain	Powers the TV remote in the 3rd-floor office
X-Ray	Low shelf by the 2nd-floor apartment’s front door	Slid under the A.S. door to catch the key
Scissor Blade ×2	2nd-floor kitchen counter; the director’s desk	Pushes the key out of the A.S. lock; both together make Scissors
Scissors	Combine the two Scissor Blades	Cuts the six odd cutouts in the film-office hallway
Cardboard Piece ×6	The six cutouts that look out of place	Rebuilds the torn DEVORA poster
Lighter	Film offices; you have it from the poster puzzle on, but we didn’t see the exact pickup (location inferred)	Burns the poster, lights candles and the oven
Mop Handle	Bathroom next to the director’s office	Goes into the slot outside the 2nd-floor bedroom window and starts the Obscuratus fight (mop handle)
Red Candle	Bar area; later from the Julia statue in the Desiderium (location inferred)	Lit, it is used on red wall symbols
Bottles I, II, IV, VIII	One on the street, two inside the bar, one in the bar bathroom	Filling and emptying the pitcher (bell and glass)
USB Cable	Inside the shattered pitcher	Combined with the USB Adapter
USB Adapter	Top of the stairs behind the 1st-floor dining room, by the boarded door	Combined with the USB Cable
USB Charger	USB Cable + USB Adapter	Charges Iván’s phone for the padlock code (projector padlock)
Plate with X	Theater box opened by Film Canister 1	The empty place at the dining table
Black Tape	Room off the dining-room stairwell	Covers the plate opposite the Plate with X
White Candle	Behind the green symbol door in the 3rd-floor apartment	A candle wall symbol (exact use not confirmed)
Piece of Cable	Box at the top of the electrical room (electrical current)	Repairs the upper-left switch
RCA Cable (yellow)	Under the collapsed statue in the electrical room	Plugs into the cinematography camera
Copper Seed	Taken from the bird on the camera feed	Planted in the green vase one floor up
Copper Poppy Flowers	The green vase, once the seed is planted	Given to the woman figure in the cinematography room
Black Candle	Desk in the TV room	Lit and used inside the elevator (elevator code)
Silver Bottle	Cage in the 2nd-floor apartment bathroom	Drains three save points (permanent), then moonlight turns it into Purified Water (cursed canister)
Purified Water	Bottle with Three Doses of Water at the hotel-room window	Cleanses the cursed film canister
Photo Roll	Floor of the 1st-floor theater lobby	Developed into a Negative in the darkroom
Cold Chisel	Last theater box, after Film Canister 3	Boarded door at the top of the 1st-floor spiral staircase
Photo Paper	Film school (exact spot not confirmed)	Printed with the Negative
White Light Bulb	The darkroom lamp	Dipped in the blood on the table it becomes the Red Light Bulb
Red Light Bulb	Bloody table at the top of the spiral staircase	Goes in the darkroom lamp
Chemicals	3rd-floor apartment bathroom (Pentacle Stone door)	Darkroom trays
Negative, Printed Photo / Photo	Made in the darkroom	The photo goes in the frame in the 3rd-floor bedroom
RCA Cable (blue)	Desiderium film school, red-door TV room	Reads as yellow under the Black Bulb (inverted cable)
Black Bulb	Desiderium film school, desk behind the blue door	Inverts the colours of the room
Green Candle	Theater box opened with the Tin Key	Lit, it opens the green stairwell symbol to floors 2–3
Glass Box	Desiderium 2nd-floor bedroom	Holds both figurines
Photographs	Clothes rack in the Desiderium 2nd-floor office	The poem wall (poem photographs)
Glass Vase	Smash the vase in the Desiderium 3rd-floor office	Filled with blood and combined with the film canisters, baked, then held to the studio light
Circular Plate	Kitchen table after the oven	2nd-floor office chest, which gives the VHS Tape
VHS Tape	2nd-floor office chest	Played on the 3rd-floor TV for the on-screen fight
Julia’s Figurine	Desiderium 2nd-floor office	Goes in the Glass Box
Iván’s Figurine	On the TV screen after the VHS fight	Goes in the Glass Box
Memento	Glass Box with both figurines inside	Used on the statue past the A.S. door

Ending items

Item	Where to find it	What it’s for
Bible	Table in the ground-floor lobby at the start of a new game	Triggers the three Iron Cross fights for Ending 3. You lose it once the TV remote puzzle is solved
Iron Cross ×3	One from each Bible fight (2nd-floor symbol tiles, padlock 6666, camera channels)	Placed in the wall by the 3rd-floor blue door for Ending 3 (endings)

Collectibles

Film Canisters 1–3 (DEVORA): 1 is in the chest in the 2nd-floor office, 2 is in Iván’s childhood room on floor -1, and 3 is the cursed canister you cleanse with Purified Water. Played on the 16 mm projector they open the theater boxes. Finding all three unlocks Devora.
Copper Stars: scattered around the building; they open the star lockers, and opening every locker unlocks Stella Plena. How many there are and where each one is: not confirmed yet.
Old Book pages: read every page for De Relictis.

Not confirmed yet

Lapis Fictus Pill: picked up around the bar section. Its description says it’s made of the same material as the statues. What it does isn’t shown in any source we used.
Golden Cross: an equippable item seen only in New Game+ footage. How you unlock it is not confirmed; see the endings page.