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