An Aster Doorway Tape Research Item in Hell is Us

Hell is Us Exploration Items Guide

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Contributed by Ashley Erickson

Published: September 7, 2025 3:31 PM

Our Hell is Us Exploration Items Guide tells you where to find these items and how you can use them to solve Good Deeds, Mysteries, and more.

Showing the Keys - Car on the Hell is Us Exploration Items Menu in the Village of Jova
Exploration Items can be used to open up locked objects such as the trunk of a car.

How Exploration Items Work

Hell is Us Exploration Items are keys, clues, and other objects that are used to solve puzzles, complete Good Deeds, solve Mysteries, or otherwise advance your progress. They are just like Investigation Items, except they are not quite as important to the main story.

Some (though not all) Exploration Items will be removed from your inventory once used. The Amine Prisms used to collapse Timeloops, for example, are one-time use items, and you'll need to find more in order to close all of the Timeloops in the game.

Below, you'll find a list of every Exploration Item we've found, where to find it, and what it's used for.

Hell is Us Exploration Items List

Exploration Item Location Specific Directions Used For
Bloodied Plushie Acasa Marshes Underneath the hanging tree in the marshes Used for the "Love Thy Neighbor" Good Deed.
Bottle of Mead - Full Lake Cynon In front of the lakeside house after you rescue Abbot Jaffer. Used to gain access to Vaas' Office for "The Captain's Office" Mystery.
Bottle of Mead - Nearly Empty Acasa Marshes Inside the house with the graffiti "Sabiians sogs We will kill you!" outside of it Can be used to attempt to gain access to Vaas' Office for "The Captain's Office" Mystery, but it will fail.
Cigarette Case  Auriga Museum Corpse in Cell 4 in the red and black marble hall on level B1 through the Training Room's Cell 8. Give to Elzina Tibor in Marastan in Korio's house after the women are rescued from the barn
Classroom Picture Acasa Marshes Give the Bloodied Plushie to the Forlorn Man in the house on the western side of the Village of Jova with a green pickup truck and a save point in the yard Used for the "Love Thy Neighbor" Good Deed.
Diary - Crazy Week Talju On a corpse on the train platform east of the church and up the stairs Used to solve the "Supply Chain" Mystery.
Dog Collar Acasa Marshes Retrieved by freeing the dog Used for the "Man's Best Friend" Good Deed.
Ethnic ID Cad - Lukhan Talju In a backpack on the ground in the Playground  
Gas Canister Marastan Found southeast of Father Bramante, who is in the fenced-off area west of the blue house on the low ground.  
Gold Watch Senedra Forest Found in the trenches just past the exit of the temple after the APC Used for the "Golden Watch" Good Deed.
Golden Clover Acasa Marshes Pathem Abbey after clearing Timeloop Triggers The Protector mystery, most likely used to open the cemetery in Jova.
ID Cards - Blank Lethe - Ministry of Cultural Primacy In Office 112 on the third floor of the Ministry of Cultural Primacy, reached by dropping down the broken hallway on the fourth floor Used to solve the "A Way Out" Good Deed in the basement of Lethe - National Library.
Key  - Rusted (Senedra Forest) Senedra Forest On the road to the APC, keep moving until you reach a pile of barrels with a white X on a blue barrel. Turn southwest and head uphill toward a picket fence and look for a red boulder. Opens the lockbox by the blue boulder.
Key - Antenna Marastan Found south of the boarded-up barn with large red doors and graffiti, which is on the left side of the road south of the APC's start point. Allows you to shut down the propaganda antenna for the "Insult to Injury" Good Deed.
Key - APC Senedra Forest Found on a dead body past the lever door in the temple under the APC Opens up the APC, allowing you to travel to other Locations.
Key - Archeology Camp Jeljin Found in the underground area next to the Timeloop Opens up the area below the Archeology Camp in Jeljin.
Key - Auriga Locker Auriga Museum B3 blue room Triggers Whistleblowers mystery
Key - Barrel Plains of Mist Next to the eye symbol in a diamond, southwest of the first puzzle door  
Key - Brass Senedra Forest Found on a skeleton in the pit below the broken stairs in Arcas Spire.  
Key - Jova Office Acasa Marshes Give the full bottle of mead to the drunk soldier behind Vitalis' house Gives you access to Captain Vaas' office for "The Captain's Office" Mystery.
Key - Mossy Plains of Mist In the higher ruins northwest of the APC.  
Key - Rusted (Arcas Spire) Senedra Forest Found behind a locked gate inside of Arcas Spire. Follow the underground tunnels until you find a ladder going back up.  
Key - Rusted (Vyssa Hills) Vyssa Hills Found in the mines. Head into the mine, take the first left, and then take the next left at the stone marked "Baccata was here," which is before the minecart track ends. You'll find the key on a skeleton holding a mining pick.  
Key - Rustic Lake Cynon The house's garage after Abbot Jaffer and Rebecca make it there Rose-shaped head - use to open chest in the alcove across the lower Abbey entrance. Triggers "Safekeeping" Mystery, along with the letter from Brother Milos
Key - Talju House Talju In a backpack on the ground in the Playground  
Key's Samo's Spare Marastan Found in Samo's General Store on the high ground in Marastan.  
Keycard - MInistry Lethe - Ministry of Cultural Primacy On a corpse in the parking garage where you enter, one level lower from where you entered Opens up the door in the office where Eynon Baughan is standing on the fourth floor of the Ministry of Cultural Primacy.
Keys - Algae Lake Cynon Found at the bottom of the Lake Cynon reservoir once it's been drained.  
Keys - Car Acasa Marshes On the front porch of Vitalis' House in the VIllage of Jova Used to open the jar half-buried in the water, directly north of the hanging tree in the marshes
Keys - Car (Wolf's Head) Lethe - National Library In the locked staff room on the second floor; opened with door code 5055 as detailed in the computer in the Embry Room.  
Keys - Ministry Car Lethe - Ministry of Cultural Primacy In the desk of the Secretary's Office on the fourth floor Opens up the blue hatchback car in the lower parking garage level marked P2 in the Ministry of Cultural Primacy
Letter - Daughter's Hope Jeljin Found in the locker in the Archeology Camp, which is opened with the key found underground next to the Timeloop.  
Letter - Safe Delivery Lethe - Ministry of Cultural Primacy In a white pickup truck with an aftermarket cargo box on the back north of the ON soldiers in the parking garage where you first arrive in the APC.  
Letter - Safekeeping Lake Cynon In the shed of the house by the lake after you rescue Abbot Jaffer.  
Letter - Worried Wife Acasa Marshes On the back porch of the building with the white ON truck parked out front in the Village of Jova  
Lymbic Rod - Ecstasty, V Plains of MIst In the Temple of the Fallen, down the path with the tablet "This door you must cross" in the Temple of the Fallen. Used to open the Lymbic Chest - Temple of the Fallen
Lymbic Rod - Ecstasy, W Plains of MIst In the Temple of the Fallen, down the left-hand path after the doorway with the inscription, "This door is sealed for all eternity..." Used to open the Lymbic Chest - Temple of the Fallen
Lymbic Rod - Ecstasy, X Lethe - Ministry of Cultural Primacy In the blue hatchback car in the lower parking garage level marked P2 in the Ministry of Cultural Primacy Used to open the Lymbic Door - Lymbic Forge Dormitory
Lymbic Rod - Ecstasy, Y Lethe - Ministry of Cultural Primacy In the desk outside Office 108 on the third floor of the Ministry of Cultural Primacy, reached by dropping down the broken hallway on the fourth floor Used to open the Lymbic Door - Lymbic Forge Dormitory
Lymbic Rod - Ecstasy, Z Vyssa Hills In the hills after opening the door with the Token of the Moon. Used to open the Lymbic Chest - Vyssa Hills, Fort
Lymbic Rod - Grief, V Vyssa Hills After you have the Mine Key, past a locked door near a glowing mineshaft. Used to open the Lymbic Door - Senedra, Hilltop
Lymbic Rod - Grief, W Acasa Marshes Located in the keypad-locked room within Vitalis' basement in the Village of Jova Used to open the Lymbic Chest - Acasa, Vitalis' Basement 
Lymbic Rod - Grief, X Auriga Museum Complete all protocols in the B4 Timeloop Weaponization room. Then head to the Stock Room on the other side of the room. Used to open the Lymbic Chest - Lymbic Forge, Waterfall
Lymbic Rod - Grief, Y Acasa Marshes Behind the red tool chest in the blacksmith's shop, accessible only after you've rescued Victor Gaz Used to open the Lymbic Chest - Acasa, Vitalis' Basement 
Lymbic Rod - Grief, Z Vyssa Hills Found in a chest by the stone coffin underneath the Watcher's Nest Used to open the Lymbic Door - Senedra, Hilltop
Lymbic Rod - Neutral, V Lake Cynon Found in the library wing next to the wine cellar. Used to open the Lymbic Chest - Lymbic Forge, Dormitory
Lymbic Rod - Neutral, W Acasa Marshes In the OMSIF Observation Outpost 08 northeast of the Village of Jova, accessed with the code 151991 after you complete Auriga Museum. Used to open the Lymbic Chest - Lake Cynon, Reservoir
Lymbic Rod - Neutral, X Acasa Marshes In the small ruins north of the hanging tree in the marshes Used to open the Lymbic Door - Acasa, Western Monument
Lymbic Rod - Neutral, Y Lake Cynon Found in on a bookcase in the room behind the Lymbic Forge's chapel pulpit and to the west, in the area below the Lymbic Forge's hammer door after you've pumped out additional water Used to open the Lymbic Chest - Lake Cynon, Reservoir
Lymbic Rod - Neutral, Z Acasa Marshes Head to Pathem Abbey's entrance where a tank is parked. Head to the right and loop around behind the abbey. This is found by the side of the road behind the Pathem Abbey next to a dead body Used to open the Lymbic Door - Acasa, Western Monument
Lymbic Rod - Rage, V Lethe - Ministry of Cultural Primacy In a white pickup truck with an aftermarket cargo box on the back north of the ON soldiers in the parking garage where you first arrive in the APC. Used to open the Lymbic Chest - Jeljin, Archaeology Camp
Lymbic Rod - Rage, W Lake Cynon Found in on a bookcase in the room behind the Lymbic Forge's chapel pulpit, in the area below the Lymbic Forge's hammer door after you've pumped out additional water Used to open the Lymbic Chest- Lymbic Forge, Hall
Lymbic Rod - Rage, X Jeljin Found at the end of the underground tunnels near the Timeloop. Used to open the Lymbic Chest - Jeljin, Archaeology Camp
Lymbic Rod - Rage, Y Talju Found in Capsian's house in Talju. Used to open the Lymbic Door - Senedra, Underground
Lymbic Rod - Rage, Z Marastan In a backpack in the tunnel leading to the Blood Queen statue; follow the path under the sign "Please Watch Your Step As You Are Entering" and make the first left turn in the large open room after the sign. Used to open the Lymbic Door - Senedra, Underground
Lymbic Rod - Terror, V Marastan Down the southern path of the tombs under the Marastan graveyard. Go down the southern tunnel, turn left, and head straight. Used to open the Lymbic Chest- Marastan, Ruins
Lymbic Rod - Terror, W Lake Cynon Found in the area below the Lymbic Forge's hammer door after you've pumped out additional water Used to open the Lymbic Door - Lymbic Forge
Lymbic Rod - Terror, X Lake Cynon Found in the Chapel of the Lymbic Forge, in the area below the Lymbic Forge's hammer door after you've pumped out additional water Used to open the Lymbic Door - Lymbic Forge
Lymbric Rod - Terror, Y Lake Cynon In the first room of the Lymbic forge with all the statues you can scan, head down the stiars on either side. Go through the passed underneath the main stair and look to the side to find a chest with a yellow loot indicator.  Used to open the Lymbic Door - Lymbic Forge
Lymbic Rod - Terror, Z Acasa Marshes Found next to the Timeloop in Pathem Abbey. Used to open the Lymbic Chest - Acasa, Eastern Ruins
Map - Senedra Mountains Talju On a dead body on the second floor of Vanderlyn Trust Used to solve the Forlorn Fate Good Deed.
Marton Ralst's Wallet Lethe - Ministry of Cultural Primacy In the room next to the Exposition Room on the third floor of the Ministry of Cultural Primacy, reached by dropping down the broken hallway on the fourth floor Hints at how to access Marton Ralst's computer.
Necklace Acasa Marshes In the trunk of the car directly north of the hanging tree in the marshes, which is opened with the key on the porch of Vitalis' house opposite the blacksmith shop Give it to Victor Gaz.
Newspaper - Sports Result Marastan Found in the Hanging Coffins Touristic Site to the North; make a right at the first lantern and another right toward the first group of ruins. Used to solve the Locked Down Mystery.
Note - Blackmailed Lethe - National Library Found in the locked staff room on the second floor; opened with door code 5055 as detailed in the computer in the Embry Room. Used to solve the Blackmailed Mystery.
Note - Caddell Treasure Hint (#1) Senedra Forest To the left of the APC on top of a stone Gives clues to the APC gate key
Note - Caddell Treasure Hint (#2) Senedra Forest Up the northwestern path past the APC. Follow the path until you reach a fork in the road marked by a pile of tires; this note is to the left of the tires. Gives clues to the APC gate key
Note - Conspiracy Lake Cynon Found on a picnic table in the picnic area at the start of Lake Cynon. Used for the "Conspiracy" Mystery.
Note - Cryptic Clue (A-3) Marastan On a table in the outdoor market on the highest tier of the town. Used for the "Conspiracy" Mystery.
Note - Cryptic Clue (E-9) Talju Found in a bus stop around the corner of the Pharmacy to the northeast Used for the "Conspiracy" Mystery.
Note - Cryptic Clue (K-5) Lethe - Ministry of Cultural Primacy Behind the Reception desk on the third floor of the Ministry of Cultural Primacy, reached by dropping down the broken hallway on the fourth floor Used for the "Conspiracy" Mystery.
Note - Cryptic Clue (L-6) Lethe - National Library Found in the shipping bay area Used for the "Conspiracy" Mystery.
Note - Cryptic Clue (N-1) Acasa Marshes Found in the back of Acasa Auto Repair Used for the "Conspiracy" Mystery.
Note - Cryptic Clue (Y-7) Jeljin Found on a bench on the left side of the church, just past the entrance. Used for the "Conspiracy" Mystery.
Note - Cryptic Maxim Vyssa Hills After you have the Mine Key, past a locked door near a glowing mineshaft.  
Note - Exodus Plains of MIst Next to the eye symbol in a diamond, southwest of the first puzzle door  
Note - Favors Owed Lethe - National Library Found on a desk in the locked Book Restoration Office in the basement, accessed with the passcode 537734 as detailed in the Note - Keycard Reminder.  
Note - Lost Keys Lake Cynon Interact with the Bulletin Board in front of the picnic area at the start of Lake Cynon.  
Note - Rho-021 Auriga Museum Complete all protocols in the B4 Timeloop Weaponization room. Then head to the Stock Room on the other side of the room.  
Note - Training Ground Acasa Marshes Found in Vitalis' blacksmith shop after you rescue Victor Gaz.  
Notebook - Symbol Research Acasa Marshes On a corpse on a wooden path to the Northeast of the Village of Jova  
Official Hadean Stamp Lethe - Ministry of Cultural Primacy In the locked safe Office 109 on the third floor of the Ministry of Cultural Primacy, reached by dropping down the broken hallway on the fourth floor. The safe code is 2703 as detailed on the Exploration Item "Note - Favors Owed" Used to solve the "A Way Out" Good Deed in the basement of Lethe - National Library.
OMSIF Deployment Order - Acasa Marshes Acasa Marshes Just past the OMSIF Observation Outpost 08 northeast of the Village of Jova, accessed with the code 151991 after you complete Auriga Museum.  
OMSIF Deployment Order - National Library Lethe - National Library Found on a corpse to the right of the front entrance, right at the start of the zone  
OMSIF Report - Ram's Head Senedra Forest Found past the trenches after the temple, on a dead body near the southern path  
Photograph - Girl Vyssa Hills Found in a lockbox by the destroyed ON trucks in the tunnels. It won't spawn until Victor Gaz and Lieutenant Zao Ru have been rescued, Lieutenant Zao Ru has recovered from her injuries, and you speak to Lieutenant Zao Ru after she's recovered. Used for the "Where the Heart Is" Good Deed.
Pill Bottle - Atenolol Vyssa Hills Found northeast of the Timeloop in a small crevice  
Pill Bottle - Metformin Talju In the bedroom inside the Pharmacy.  
Ram Head Medallion - Viridian Senedra Forest Found a short distance past the door locked by two circular locks on either side near a couple of enemies. Used for the "Secrets of the Ram" Mystery.
Ram's Head Medallion - Crimson Senedra Forest Found past the trenches after the temple, on a dead body near the southern path Used for the "Secrets of the Ram" Mystery.
Recording - Aster Doorway 1 Lethe - Ministry of Cultural Primacy On a bookshelf in Marton Ralst's office through the Accounting Office on the fourth floor Gives you clues how to open the Aster Doorway for the "Family First" Mystery.
Recording - Aster Doorway 2 Jeljin In the large tent south of the church Gives you clues how to open the Aster Doorway for the "Family First" Mystery.
Recording - Aster Doorway 3 Jeljin Found in the Timeloop - Jeljin Cemetary Gives you clues how to open the Aster Doorway for the "Family First" Mystery.
Report - Confiscation Lethe - Ministry of Cultural Primacy In the blue hatchback car in the lower parking garage level marked P2 in the Ministry of Cultural Primacy  
Ring - Hand-Made Auriga Museum Exit the B1 training room through Cell 8 which is on the righthand side when facing the large training room door. Item is on the corpse in the room across the hall in Cell 002. Triggers "Mementos" Good Deed.
Samo's Keys  Marastan Behind the counter in the main part of Samo's Store.   
Satellite Radio Lethe - Ministry of Cultural Primacy In the hallway outside of the keycard-locked office on the fourth floor of the Ministry of Cultural Primacy. For the "Waylaid" Good Deed.
Scroll - Failsafe Lake Cynon  Through the keystone door towards Mount Obek. Found in the Eye of God room. Lists all the icon names for the Lymbic Spheres
Sheet Music - Losilus Dreaming Vyssa Hills East of the Weeping Knight statue, in a suitcase on a trunk next to a dead body Used for the "Performance of a Lifetime" Good Deed.
Sheet Music - Our Pride Acasa Marshes On a piano to the south of the Jova Java coffee shop on the outdoor patio Used for the "Performance of a Lifetime" Good Deed.
Shoes - Red Jeljin Found in the locker in the Archeology Camp, which is opened with the key found underground next to the Timeloop. Used for the "Never Worn" Good Deed.
Signal Flare Talju 4 found west of the Town Hall's front door Used for the "A Light in the Dark" Good Deeds.
Symbol - Flame Talju On a dead body on the second floor of Vanderlyn Trust Used to open up the sealed door in the Senedra Forest trenches for the
Symbol - Iron Crown Auriga Museum Complete all protocols in the B4 Timeloop Weaponization room. Then head to the Stock Room on the other side of the room. Triggers the Great Responsibility mystery. Use in the Auriga Museum entrance lobby to open a library, which contains Polearm of Rage lvl 10 grade 3, a Ceremonial key (research item), a Tuning Stone - Steady, and a scannable plaque
Woman's Clothing Lethe - Ministry of Cultural Primacy In the keycard-locked office on the fourth floor of the Ministry of Cultural Primacy. For the Incognito Good Deed
Zoom Lens Talju In the front window of the burning Photo Shop Used for "The Hermit" Mystery

Thanks for reading this Hell is Us Exploration Items Guide. While you're here, why not check out some of our other guides below?

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More Info About This Game
Learn More About Hell is Us
Game Page Hell is Us
Developer
Rogue Factor
Publisher
Nacon
Release Date
September 4, 2025 (Calendar)
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