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.
Got everyone out of The Cave without dying once.
Peered into everyone's fate.
Saw the good in everyone.
Collector of forgotten dreams.
Made all three characters smell like a dinosaur at once.
The scale reveals a baleful figure.
Sacrificed oneself for ultimate flavor.
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.
Enabled the Hillbilly to burn down the Carnival.
Food-based destruction.
Played some dubious role in the Monk's murder of his Master.
Broke bridges.
Slipped, where wet.
Reached the bottom of The Cave.
Remembered it's wrong to steal.
Shared in the blame for the Scientist's act of mass murder.
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.
3 die by the Miner's hand.
Where did the King go anyway?
Saw a postcard stolen from the Gift Shop.
Helped the Knight obtain Excalibur.