Here is the full list of all 29 Indivisible achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
United in the struggle to better ourselves.
Upgraded to Attack Level 5.
Completed one Incarnation's Resolution quest.
Stopped Kala from resetting the world.
Attuned to all seven of Loka's Chakra Gates.
Summited Mt. Sumeru, gateway to the heavens.
Confronted Obsidian Wind, Kaanul's self-fulfilling prophecy.
Upgraded to Defense Level 5.
Dissolved the Slime Queen and freed Queen Mary from its clutches.
Toppled Garuda Cruel and set Tai Krung City free at last.
Accepted and channeled the rage within, awakening Maha Heruka.
Upgraded to Defense Level 4.
Deposed the Crime Lord Mara and ended his insatiable greed.
Upgraded to Attack Level 4.
Destroyed the Iron Kingdom's menacing war machine, MOLOCH.
Stopped the Serpent Queen from sealing her citizens away from the world.
Dealt a total of 2,216,972 damage or more.
Upgraded to Defense Level 3.
Successfully performed 108 Clean Blocks.
Arrived in the bustling town of Port Maerifa, gateway to the world.
Used over 108 bars of Iddhi in battle.
Awakened the power of Heruka, the wrathful deity.
Achieved a combo of 108 hits or more.
Reached the center of the world, the hard way.
Upgraded to Attack Level 3.
Recruited a new friend to join you on your journey.
Set out on a journey to confront the evil warlord, Ravannavar.
Successfully performed a Clean Block.
Used an Iddhi Power for the first time.