| Achievement | How to unlock
|
|---|
| Case Closed | Complete the game with 100% progress.
|
| Grey Matter | Solve every riddle.
|
| It's in the Bag | Solve the first riddle.
|
| Marksman | Kill every target without wasting a bullet.
|
| Nothin' But Net | Win every QTE in one try.
|
| Speed Racer | Complete the game with 100% progress in record time.
|
| Summa Cum Laude | Win every riddle in one try.
|
| Super Sleuth | Complete the game.
|
| The Postman Rings Ten Times | Open every mailbox.
|
| Tour de Force | Win every QTE.
|
| With Flair | Complete the game with Rank A.
|
| With Moderation | Win your first QTE.
|