| Achievement | How to unlock | Points
|
|---|
| Agent H. | Find all Harold's notes. | 25
|
| Avid reader | Collect ten notes as Nicolas. | 10
|
| Awakening the Beast | Choice No. 2. | 25
|
| Bookworm | Collect all notes as Adam. | 10
|
| Boy with the matches | Collect 50 boxes of matches. | 10
|
| Breaking with the past | Choice No. 1. | 25
|
| Citizen of Blackstone | Unlock all achievements. | 200
|
| Closed ward | Ending No. 1. | 20
|
| Codebreaker | Solve the Enigma. | 30
|
| Cold Bastard | Defeat Walter Gilman. | 70
|
| Eagle Eye | Find ten hidden messages. | 10
|
| Erudite | Collect all notes as Nicolas. | 10
|
| Full tank | Collect fifty bottles of kerosene. | 10
|
| Ghostbuster | Chase away Norton's Ghost 10 times in the woods. | 70
|
| Gonzo journalist | Collect all newspaper clippings. | 25
|
| Housekeeping | Find the Key to the Attic. | 10
|
| Librarian | Collect ten notes as Adam. | 10
|
| Long Arm of Justice | Defeat John Norton. | 70
|
| Moth | Light 30 candles. | 10
|
| Newsflash | Hear every news message on the radio. | 70
|
| No noise | Shoot down all anomalies. | 70
|
| No secrets | Find all hidden messages. | 70
|
| Sparrow | Ending No. 3. | 20
|
| Spycraft | Ending No. 2. | 20
|
| The End of Madness | Ending No. 4. | 20
|
| The True Beast | Finish the game. | 70
|
| Where it all begins | Complete Chapter 1. | 10
|