Documents can be collected throughout the game, sometimes giving hints about a puzzle. Collecting these is part of the Every Nook and Cranny trophy/Achievement.
Chapter 1: An Emergency Call Edit
- Document #1: Old note from sewer
Where to find it: After you escape the sadist you'll end up in the sewers. Continue on to a catwalk with a body in a wheelchair. You will find this document on the floor near him.
- Document #2: Boiler room note
Where to find it: This one is right after the last one. Climb the nearby ladder and you'll see a desk. The document is right on the desk.
Chapter 2: Remnants Edit
- Document #3: Lakeside town note
Where to find it: This is located in the lighthouse area, after the scene where Sebastian discovers more enemies... it is right outside the first house on the right, by the fire, on a beam.
Chapter 4: The Patient Edit
- Document #4: Villager's note
Where to find it: From the start of the chapter head to the first house on the right. Inside you will be able to squeeze through a small gap in the corner into another room. Here you'll find a bed and on the bed is this document.
Chapter 5: Inner Recesses Edit
- Document #5: Underground facility note
Where to find it: In the chapter you'll eventually come to a blue tile room. This is the area where you must look through tiles and solve some puzzles. In the second room you enter (the middle one), you can find this document on a table in the back corner.
Chapter 6: Losing Grip on Ourselves Edit
- Document #6: Graveyard note
Where to find it: On the ground in front of the horse statue that Joseph finds in the maze-like area where you fight Zhen and Neun.
- Document #7: Cemetery lab note #1
Where to find it: After the body puzzle area you will find a make-shift lab. You can find this document in the lab.
- Document #8: Cemetery lab note #2
Where to find it: This one is close to the above note. Press onward into the next room and you'll find this note by a body.
Chapter 7: The Keeper Edit
- Document #9: Catacomb note
Where to find it: After you obtain the very first old lithograph key item, a wall will open up showing someone's living area. Check a table to the right in here to find this document.
Chapter 8: A Planted Seed Will Grow Edit
- Document #10: Cave note
Where to find it: In this chapter you'll have to place a plate into a door to continue. You can find this document on the floor in this narrow area.
- Document #11: Research facility note
Where to find it: Near the end of the chapter you will be transported back to the hospital. There will be a circular room ahead. After a scene, you can find this document on some equipment to the left.
Chapter 9: The Cruelest Intentions Edit
- Document #12: Mansion dining room note
Where to find it: Once you enter the mansion you can find this in the dining room, which is the left door. The door right next to the save room. It is on the table as soon as you enter.
- Document #13: Ruvik's room note
Where to find it: Once you enter the mansion you can find this upstairs. Take the left set of stairs up and enter the left door. From there, enter the first door on the left and then check the desk to find this note.
- Document #14: Mansion music room note
Where to find it: Once you enter the mansion head through the right door behind the stairs. This path leads to the music room. This document is underneath a painting .
Chapter 10: The Craftsman's Tools Edit
- Document #15: Mansion basement note
Where to find it: At the start of the chapter search for this document right outside of the first save room.
Chapter 15: An Evil Within Edit
- Document #16: Newer note from sewer
Where to find it: During this chapter you'll be transported back to the sewer area from the beginning of the game. Go check the wheelchair next to you and on the ground you'll find this document.