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