Successfully complete the indicated task to unlock the corresponding achievement. To view your achievements and stats in Steam, select "Community", "My profile", "View all my games", then the game and view stats.
- Bone Collector: Collect all Relics of Bones from The Underworld.
- Boy scout: Collect your first Relic.
- Chapter 3 cleared: Finish Chapter 3.
- Discovering Science: Find all photos.
- The Case of "The Surgeon": Pickup all notes from The Underworld.