Here is the full list of all 20 Road Not Taken achievements.
Completed the first mission
Crafted an angry ghost.
Banned an object
Chopped wood
Crafted a fire
Ate Raccoon Stew
Picked up Poop
Earned a silver watch
Rescued 30 children
Rescued 100 children
Married
Cured someone
Earned a gold watch
Completed a career
Completed 3 careers
Never used teleport in an entire career
Play an entire career without stepping on any spirits
Play an entire career without eating meat of any kind
Discovered 100 secrets
Discovered 200 secrets