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.
Either on (at least) your 5th playthrough or in Chaos difficulty, win the final battle without retrying! Play long enough in Intense to unlock this ghastly difficulty setting. It's the only difficulty that offers a chance of obtaining triple-skill equipment!