Here is the full list of all 33 The Painscreek Killings achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Case Unsolved
Matthew Brooks' Story
Wanda Tyler's Story
Best Friends Forever
All Tools Found
Oliver Gibson's Story
Dorothy Patterson's Story
Sofia Miller's Story
Here Lies Sofia
Scott Brooks' Story
Scott's Secrets
The Hidden Truth
Trisha Roberts' Story
The Secret Lies With Her
Guest's Lost Cap
Andrew Reed's Story
Mary Martinez's Story
Tutorial Completed
James Howard's Story
Bernard Hopkin's Story
Charles Roberts' Story
Derrick Tyler's Story
Steve Moss' Story
Vivian Roberts' Story
All Newspaper Articles Found
All Letters Found
All Keys Found
Completionist
Truth Revealed
Missing Journalist
You're Fired
Dying Man's Letter
Bloody Knife