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