Totally Tuberelle

Achievement is rewarded after defeating Yateveo without getting hit by the tuberelle's attack in Sabex Armory.

Guide
This achievement is obtainable during the final boss fight. Like the previous fights, Archdevans will appear and summon creatures called tuberelles. These creatures line the edge of the room and have a massive AoE ring that damages everything inside of them once they explode. Simply kill the ones surrounding you to ensure you have a safe place to stand and the achievement is yours.