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