Trokka is the main story boss for the tenth mission, Witch’s Castle. She is the apprentice of Ozma, who was deemed a witch growing up in her city mainly because of her natural power to control water. Trokka’s boss arena is located next to Lydia’s Garden (Blade Nexus) in Lake City Aldevir. Almost all of her attacks cause Frost buildup, and her attack patterns can be tricky to avoid. Here is everything you need to know about beating her and the rewards you get after in The First Berserker: Khazan.