Black Dragon Slayer

Beat the battlefield "The Rank 2 Final Mission" at Balga's Dais.

This battlefield is available to those who have advanced to the appropriate part of San d'Oria Mission 2-3 Journey Abroad and chosen the Bastok > Windurst route, or Bastok Mission 2-3 The Emissary and chosen the San d'Oria > Windurst route. If you have completed both of these missions and had chosen the other routes, though the missions themselves aren't repeatable, you may still enter the battlefield if your party leader undertakes it.