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