Full list of all 30 The Dark Pictures Anthology: Little Hope achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Completed the Solo Story
Andrew was saved from himself
Saved Mary
Saved Andrew
Headstrong was one of top two traits for Taylor
Amiable was one of top two traits for Daniel
Compassionate was one of top two traits for Andrew
Completed the prologue
Found all witchcraft secrets
Finished Movie Night
Defeated Taylor's demons
Completed 5 combat events in succession
Rational was one of top two traits for John
Understanding was one of top two traits for Angela
Chose all of the Heart decisions
Chose all of the Head decisions
Saved Daniel
Saved Taylor
Saved Angela
Saved John
Found all of the black framed Pictures
Found all of the white framed Pictures
Everyone died at the ruined house
Everyone was saved
Maximized Angela and John's Relationship
Maximized Daniel and Taylor's Relationship
Andrew has a good relationship with all characters
Found all family secrets
Found all Pictures
No-one survived