A trophy, also known as an achievement, is a meta-goal defined outside of a game's parameters and is primarily used to extend the title's longevity and provide players with the impetus to more than simply complete the game, but find all of its secrets. Outlast and its DLC feature 14 achievements on the Windows version, 17 achievements worth a total of 1500 gamerscore on the Xbox One version and 14 trophies on the PlayStation 4 version.
Outlast Achievements/Trophies
| Name | Description | Hidden | Trophy level | Points | Image |
| Illuminated | Restore power to the Administration Block. | Yes | Bronze 
|
50
|
|
| Elevator Operator | Dropped the corpse in the elevator shaft. | Yes | N/A | 25
|
File:Elevator Operator.jpg |
| Flushed | Drain the Sewers. | Yes | Bronze
|
50
|
|
| Soaked | Activate the sprinklers in the Male Ward. | Yes | Bronze
|
50
|
|
| Emancipated | Collect the key in the Female Ward. | Yes | Bronze
|
50
|
|
| Educated | Collect 15 documents and complete 15 recordings. | No | Silver 
|
50
|
|
| Punished | Finish the game. | No | Silver
|
100
|
|
| Pulitzer | Collect all documents and complete all recordings. | No | Gold 
|
125
|
|
| Lunatic | Finish the game in Insane mode. | No | Gold
|
150
|
|
| Claustrophobe | Finished the game without hiding under a bed or in a locker. | No | N/A | 150
|
File:Claustrophobe.jpg |
| Energiser | Finished the game in Insane Mode without reloading camera batteries. | No | N/A | 200
|
File:Energiser.jpg |
Outlast: Whistleblower Achievements/Trophies
| Name | Description | Hidden | Trophy level | Points | Image |
| Gas Leaker | Turn off the gas. | Yes | Bronze
|
50
|
|
| Shocker | Turn off the electricity. | Yes | Bronze
|
50
|
|
| Whistleblower | Finish the Whistleblower DLC. | No | Bronze
|
100
|
|
| BowelWhistler | Finish the DLC in Insane mode. | No | Gold
|
150
|
|
| Archivist | Collect all documents. | No | Silver
|
75
|
|
| Legacy | Complete all recordings. | No | Silver
|
75
|
|