There are 41 achievements worth a total of 1000 points
Completed the game on the hard game difficulty setting, any ending.
Completed the game on the hard puzzle difficulty setting, any ending.
Completed the game on any difficulty without killing any monsters.
Completed all side quests.
Completed the "Digging up the Past" side quest.
Completed the "Bird Cage" side quest.
Completed the "All Points Bulletin" side quest.
Completed the "Stolen Goods" side quest.
Completed "The Art Collector" side quest.
Completed "The Bank" side quest.
Completed the "Homeless" side quest.
Completed the "Cinéma Vérité" side quest.
Completed "The Gramophone" side quest.
Completed the "Shadow Play" side quest.
Completed the "Dead Man's Hand" side quest.
Completed the "Ashes to Ashes" side quest.
Completed the "Ribbons" side quest.
Completed the "Mirror, Mirror" side quest.
Killed or incapacitated 10 Screamers.
Killed or incapacitated 10 Dolls.
Killed or incapacitated 10 Weeping Bats.
Killed or incapacitated 10 Prisoner Minions.
Killed or incapacitated 10 Prisoner Juggernauts.
Escaped from 20 monsters.
Completed Murphy's Journal with all Mysteries.
Incapacitated 20 monsters without killing them.
Killed 25 monsters with the Pistol or Shotgun.
Used 20 First Aid Kits.
Escaped from Devil's Pit.
Met DJ Ricks in the Radio Station.
Escaped the Radio Station Otherworld.
Collected 3 pages of the rhyme book.
Defeated The Bogeyman.
Reached Overlook Penitentiary.
Achieved "Forgiveness" ending.
Achieved "Truth & Justice" ending.
Achieved "Full Circle" ending.
Achieved "Execution" ending.
Achieved "Surprise!" ending.
Survived the Diner Otherworld.
Rode the Sky Tram to Devil's Pit.