Location: Found in Chapter 4: The Patient next to the corpse of a hospital orderly in a recovery ward after dropping down one level. Upon reaching the room with the wheelchair in the middle, go through the doors to the right, past the chamber with the beds and invisible Haunted and look to the right to see a small office. The keycard will be inside near the dead body. Unmissable.
Joseph has worn this same pair for as long as Sebastian has known him.
Location: Found in Chapter 6: Losing Grip on Ourselves. After defeating the Sentinel for the first time and returning to Joseph, he will ask Sebastian to come back inside to find his dropped glasses. These should be out in the open at the far end of the arena. Unmissable.
This lithograph was pried from a stone door, where it seems to have been used as a key.
Location: Found in Chapter 7: The Keeper. After the cutscene involving Joseph Oda, Sebastian will be teleported underground. Keep following the linear path through the tunnels until an L-bend corridor with some side rooms infested with The Haunted. The Lithograph will be at the far end on a stone door opposite of an altar. Unmissable.
A large valve wheel used to adjust a volume of liquid or gas.
Location: Found in Chapter 7: The Keeper. After the cutscene where The Keeper smashes a valve handle, backtrack towards the room where Leslie's cage was. The valve handle should be on a workbench along the way. If Sebastian ends up in the cage area, the player has gone too far. Unmissable.
Bloody Relief Plate
This strange plate has faces carved into either side of it. One side has blood streaked across it.
Location: Found in Chapter 8: A Planted Seed Will Grow. After reaching the end of the cavern area and squeezing through a gap, Sebastian will reach what looks to be a short lit corridor with a metal door and spikes on the sides. The plate will be on the floor between the door and the nearby corpse. Unmissable.
Upper Safe Dial
This old safe dial is marked with the numbers 0 through 24.
Location: Found in Chapter 9: The Cruelest Intentions. Inside the mansion, go up the stairs to the second floor and enter the library. Climb the ladder on the far side to find the dial in a box on the upper level. Unmissable.
Lower Safe Dial
This old safe dial is marked with the numbers 0 through 9.
Location: Found in Chapter 9: The Cruelest Intentions. Inside the mansion, go up the stairs to the second floor and go through the double doors in the middle of the landing. The dial is in a box on a nightstand. Unmissable.
This large portable storage cell can be used to get electrical equipment working in an emergency.
Location: Found in Chapter 10: The Craftsman's Tools. Inside the carousel area with the mine traps, there will be a masked Haunted carrying a torch. Sneak kill this Haunted and enter into the nearby corridor and up the ladder. This area will have several more Haunted to kill. The battery pack will be in the back room on a table. Unmissable.
Key ring found by the body in the alleyway. Used to secure the materials storage area.
Location: Found in Chapter 11: Reunion. Inside the area with the chain-link fence maze, it should be visible on the ground as Sebastian approaches the location. Once inside the maze, make way towards the cul-de-sac where the key and its former owner lie. Unmissable.
A keycard found next to a dead body in the mannequin factory.
Location: Found in Chapter 11: Reunion. Inside the mannequin warehouse with the flammable gas. Once actually inside the area, maneuver past the two Trauma up onto the catwalks and down to the other side. When facing the shutter with the card reader, the key will be in a container on the far right side, near a mob of Haunted eating a dead body. Unmissable.
An emergency blood-clotting agent for treating wounds. The bandage contains medication for easy-to-use first aid.
Location: Found in Chapter 12: The Ride. After Joseph got shot, Sebastian will have to leave the bus to find him medical aid. The hemostatic pack is found in the back of the ambulance on the bridge. Unmissable.
Junction Box Fuse
A high-voltage fuse from a junction box. It is still intact and can be used again.
Location: Found in Chapter 14: Ulterior Motives. In the sewer area where Sebastian must turn the drain valve to reveal the way forward. The fuse is on an electrical board next to two electrodes with a running current and must be picked up to proceed. Unmissable.
Despite there being a total of three Old Lithographs needed to proceed in Chapter 7, there is only one entry for the first plate that Sebastian picks up. The Junction Box Fuse likewise has three separate copies to pick up, but still sharing one entry.
The Ordinary Keys and Old-Fashioned Key items use the same graphic in the Archives. Likewise, the Hospital and Factory Keycards share the same inventory image.