| Achievement | How to unlock | Points
|
|---|
| Director | Watch all cutscenes. | 50
|
| Fincher | Finish the game. | 100
|
| Firestarter | Complete a level without being caught by the Zodiac. | 100
|
| Hangman | Drop the puppet in the shed. | 100
|
| Investigation Discovery | Collect all Journal Clues. | 100
|
| Monica | Open the safe with a code. | 100
|
| Thief | Complete the entire game without being caught by the Zodiac. | 100
|
| This is the Zodiac Speaking | Meet the Zodiac for the first time | 50
|
| True Detective | Set the chronology of events. | 100
|
| Truth | Unlock the first hologram. | 100
|
| Victim | Get caught by the Zodiac. | 100
|