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
Completionist
Missing Journalist
All Letters Found
Matthew Brooks' Story
Derrick Tyler's Story
All Keys Found
Truth Revealed
Wanda Tyler's Story
Bloody Knife
Charles Roberts' Story
All Newspaper Articles Found
Sofia Miller's Story
All Tools Found
Here Lies Sofia
Vivian Roberts' Story
Bernard Hopkin's Story
Best Friends Forever
Oliver Gibson's Story
Dorothy Patterson's Story
Steve Moss' Story
Scott Brooks' Story
Scott's Secrets
Trisha Roberts' Story
The Hidden Truth
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