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