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