Hidden throughout the Niwa Hotel and it's grounds are collectibles which will give you hints as to what really happened. In order to fully understand the story you need to each of them. Collecting them all will also enable you to unlock the An Unknown Outcome, Followed the Trail, Calling Out to Me, All That's Left Unsaid, Devouring Darkness, and Puzzling Out the Past achievements. Take a look at the video below to see the location of each of the collectibles in The Medium.
Echoes, Notes, Diaries, and Postcards Locations
Famished Feline Achievement - 0:27ΓΆΒ?Β?
Photo 1: Jack - 0:54ΓΆΒ?Β?
Postcard: Niwa Says Hello - 1:12ΓΆΒ?Β?
Eerie Drawing: Someone New - 1:33ΓΆΒ?Β?
Echo 1 - 2:00ΓΆΒ?Β?
Postcard: Honest Work - 2:38ΓΆΒ?Β?
Echo 2 - 3:12ΓΆΒ?Β?
Postcard: Promotion - 3:35ΓΆΒ?Β?
Echo 3 - 3:59ΓΆΒ?Β?
Memory Shard 1 - 4:40ΓΆΒ?Β?
Echo 4 - 5:30ΓΆΒ?Β?
Mentor's Diary: An Apology - 5:30ΓΆΒ?Β?
Memory Shard 2 - 6:12ΓΆΒ?Β?
Echo 5 - 6:43ΓΆΒ?Β?
Eerie Drawing: Lonely - 7:03ΓΆΒ?Β?
Troubled Man's Notes: A Peaceful Place - 7:30ΓΆΒ?Β?
Eerie Drawing: Old Man - 7:30ΓΆΒ?Β?
Troubled Man's Note: To-Do List - 8:05ΓΆΒ?Β?
Troubled Man's Note: Getting Stronger - 8:35ΓΆΒ?Β?
Photo 2: From Hiding - 8:35ΓΆΒ?Β?
Troubled Man's Note: Fever Dreams - 9:02ΓΆΒ?Β?
Echo 6 - 9:24ΓΆΒ?Β?
Echo 7 - 9:53ΓΆΒ?Β?
Echo 8 - 10:13ΓΆΒ?Β?
Postcard: Someday - 10:36ΓΆΒ?Β?
Troubled Man's Note: Good Old Frank - 10:51ΓΆΒ?Β?
Echo 9 - 11:11ΓΆΒ?Β?
Echo 10 - 11:39ΓΆΒ?Β?
Echo 11 - 12:02ΓΆΒ?Β?
Echo 12 - 12:32ΓΆΒ?Β?
Other: Torn Illustration - 13:11ΓΆΒ?Β?
Echo 13 - 14:11ΓΆΒ?Β?
Eerie Drawing: Bad Nursie - 14:41ΓΆΒ?Β?
Eerie Drawing: Dark - 14:59ΓΆΒ?Β? (Split Path: Male Soul)
Echo 14 - 15:23ΓΆΒ?Β? (Split Path: Male Soul)
Echo 15 - 15:49ΓΆΒ?Β? (Split Path: Male Soul)
Postcard: A Scenic View - 16:25ΓΆΒ?Β? (Split Path: Female Soul)
Echo 16 - 17:15ΓΆΒ?Β? (Split Path: Female Soul)
Echo 17, 18, 19, 20 - 17:45ΓΆΒ?Β? (Split Path: Female Soul)
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