Here is the full list of all 42 Silent Hill: Downpour trophies - there are 24 bronze, 14 silver, 3 gold and 1 platinum.
Collected all trophies.
Achieved "Surprise!" ending.
Completed the "Digging up the Past" side quest.
Achieved "Truth & Justice" ending.
Achieved "Execution" ending.
Killed or incapacitated 10 Prisoner Juggernauts.
Completed Murphy's Journal with all Mysteries.
Completed the "Bird Cage" side quest.
Completed all side quests.
Completed the "Mirror, Mirror" side quest.
Completed the "Ribbons" side quest.
Completed the "Shadow Play" side quest.
Completed the "Ashes to Ashes" side quest.
Completed the "Dead Man's Hand" side quest.
Completed "The Art Collector" side quest.
Completed the "Homeless" side quest.
Killed or incapacitated 10 Weeping Bats.
Completed the "Cinéma Vérité" side quest.
Completed "The Gramophone" side quest.
Completed "The Bank" side quest.
Killed 25 monsters with the Pistol or Shotgun.
Completed the "All Points Bulletin" side quest.
Achieved "Full Circle" ending.
Completed the game on the hard puzzle difficulty setting, any ending.
Completed the game on the hard game difficulty setting, any ending.
Achieved "Forgiveness" ending.
Completed the game on any difficulty without killing any monsters.
Killed or incapacitated 10 Prisoner Minions.
Used 20 First Aid Kits.
Reached Overlook Penitentiary.
Defeated The Bogeyman.
Collected 3 pages of the rhyme book.
Incapacitated 20 monsters without killing them.
Killed or incapacitated 10 Dolls.
Escaped from 20 monsters.
Escaped the Radio Station Otherworld.
Met DJ Ricks in the Radio Station.
Killed or incapacitated 10 Screamers.
Completed the "Stolen Goods" side quest.
Escaped from Devil's Pit.
Rode the Sky Tram to Devil's Pit.
Survived the Diner Otherworld.