Here is the full list of all 16 The Dreadful Whispers achievements.
Fall.
Finish the game by overcoming fear.
Finish the game crippled with regret.
Collect all thoughts.
Find the Torch.
Find the Cave.
Check out my Youtube channel from the About menu.
Look at every single fan art piece.
You've found every secret. Right ?
Finish the game in under 45 minutes in one sitting. (starting from the first level after the main menu)
Check out Dave's music portfolio from the About menu.
Experience the entire game.
Finish the game without dying more than 10 times.
Take time to relax.
No, you are not weak. You are great.
Obliterate every dark head.