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