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.
Truth Revealed
Charles Roberts' Story
Sofia Miller's Story
Bernard Hopkin's Story
Derrick Tyler's Story
Mary Martinez's Story
Matthew Brooks' Story
Scott Brooks' Story
Steve Moss' Story
Trisha Roberts' Story
Vivian Roberts' Story
Bloody Knife
Wanda Tyler's Story
Here Lies Sofia
Scott's Secrets
The Hidden Truth
The Secret Lies With Her
Dying Man's Letter
Andrew Reed's Story
Best Friends Forever
Guest's Lost Cap
Tutorial Completed
James Howard's Story
Dorothy Patterson's Story
Oliver Gibson's Story
All Newspaper Articles Found
All Letters Found
All Keys Found
All Tools Found
Completionist
Missing Journalist
Case Unsolved
You're Fired