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