Here is the full list of all 16 Picross Fairytale achievements.
All Trophies collected
Castle world complete
50 hints used
All mini-games complete
All keys collected
Mountain world complete
"Solved in less, then 60 seconds"
20 hints bought
Earned 100.000 coins
World completed without hints
Lake world complete
Forest world complete
Hamlet world complete
Mini-game complete
3 levels in raw without hints
Tutorial finished