Here is the full list of all 27 The Cave achievements worth 400 gamerscore. It takes around 12-15 hours to unlock all of the achievements on Xbox 360.
Reached the bottom.
Nobody died.
Stole.
Remembered it's wrong to steal.
Everyone reached the bottom.
Saw the good in everyone.
Saw the darkness in all our hearts.
Collector of forgotten dreams.
Sacrificed oneself for ultimate flavor.
Where did the King go anyway?
The scale reveals a baleful figure.
3 die by the Miner's hand.
Pantomimed an ancient hieroglyph.
Broke things.
Everyone is gross.
Captured crusty melodies.
Slipped, where wet.
Broke bridges.
Food-based destruction.
Peered into everyone's fate.
Obtained Excalibur.
Burned down the Carnival.
Came ever-so-close to recovering the Sarcophagus.
Murdered your parents.
Murdered the ancestor of your enemy.
Murdered millions.
Murdered your master.