Unbreakable is one of the achievements in Into the Breach. Using the Steel Judoka squad, the player must absorb 5 damage with armor in a single battle.
Strategy[ | ]
This achievement is best done in the first island, when alpha enemies are less common, and preferably in a mission that lasts for 5 turns.
Since the only mech in the squad that has natural armor is the Judo Mech, the set-up can be made easier by starting the timeline with Abe Isamu piloting the Gravity Mech.