Full list of all 56 Tales of Zestiria achievements. It takes around 100-120 hours to unlock all of the achievements in the base game on Windows.
The base game contains 50 achievements, and there is 1 DLC pack containing 6 achievements.
This is proof that at least one Lord of the Land has reached Blessing Level 20. Even when they pass to the stars, they find it hard to abandon those over whom they watch. It seems some remnant of their blessing remains even after you finish the game.