Here is the full list of all 27 The Cave achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Peered into everyone's fate.
Saw the good in everyone.
Collector of forgotten dreams.
Slipped, where wet.
Pantomimed an ancient hieroglyph.
Food-based destruction.
Recorded and played back the elevator music from the Zoo food court.
Made all three characters smell like a dinosaur at once.
3 die by the Miner's hand.
The scale reveals a baleful figure.
Sacrificed oneself for ultimate flavor.
Got everyone out of The Cave without dying once.
Everyone reached the bottom.
Saw the darkness in all our hearts.
Came ever-so-close to recovering the Sarcophagus.
Played some dubious role in the Monk's murder of his Master.
Broke bridges.
Served as an accessory to the Time Traveler's murder of her enemy's ancestor.
Where did the King go anyway?
Reached the bottom of The Cave.
Remembered it's wrong to steal.
Shared in the blame for the Scientist's act of mass murder.
Enabled the Hillbilly to burn down the Carnival.
Stood by and watched as the Twins murdered their parents.
Watched Mummy and Daddy's furniture get broken all to bits.
Helped the Knight obtain Excalibur.
Saw a postcard stolen from the Gift Shop.