Here is the full list of all 14 Witch 3 Return achievements.
Get the achievement on first contact with a ghost
Get the achievement by completing the Duke Weber line
Get the achievement when you get the "Ghost toy" ending
Get achievements by all hints are collected
Get the achievement when you exorcise all the spirits
Get the achievement when you get ending Jack
Get the achievement if you free the Jester
Get the achievement when you get the "The Quest Never Ends" ending
Get the achievement when you get the "Workout" ending
Get the achievement when you get the "Next time" ending
Get the achievement when you get the "Tlazdine" ending
Get the achievement when you first get caught by the inquisitor
Get the achievement when you get the "Inquisitor" ending
Get the achievement when you get the "Master of Puppets" ending