Full list of all 14 Outlast trophies - 7 bronze, 4 silver and 3 gold. It takes around 8-10 hours to unlock all of the trophies in the base game.
The base game contains 8 trophies, and there is 1 DLC packs containing 6 trophies.
Restore power to the Administrative Block
Drain the Sewers
Activate the sprinklers in the Male Ward
Collect the key in the Female Ward
Collect 15 documents and complete 15 recordings
Finish the game
Collect all documents and complete all recordings
Finish the game in Insane mode
Turn off the gas
Turn off the electricity
Finish the Whistleblower DLC
Finish the DLC in Insane mode
Collect all documents
Complete all recordings