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