Here is the full list of all 30 Endless Fables 4: Shadow Within achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
You uniquely defeated the Sandman.
You saved a nearly lost soul.
You skillfully avoided the shadogs.
You defended your friend's soul.
You repaired a flying boat.
You became a friend of the Fluffs.
You acquired the knowledge about the Sandman.
You boldly visited through the dreams.
You smoothly prepared a remedy.
You entered another world.
You snuck into the castle.
Finish a Hidden Object Puzzle in 90 seconds.
You retraced Agatha's clues.
Complete four Minigames without skipping.
Complete four Minigames, each in less than 60 seconds.
You read a fable to a young girl.
Complete a Minigame in 60 seconds.
You creatively fixed the train door.
You patiently listened to the Fluff's story.
You flew high up in the sky.
You dexterously got inside the hive.
You've virtuously defeated the Queen of Wasps.
Finish a Hidden Object Puzzle without any mistakes.
Finish a Hidden Object Puzzle without using Hint.
Finish all Hidden Object Puzzles without any Hints.
Complete all Minigames without skipping.
Collect all figurines.
Collect all puzzle pieces.
Play through all story-telling Minigames without skipping.
Open the Map at least once.