Calixte, System Ward Finality

Calixte, System Ward Finality is a Vex Hydra of the Sol Collective and an Ultra-ranked boss. It leads a Vex incursion at the Radiosonde Power Plant in Lightfall, siphoning power from Neomuna, and is the boss of the Breakneck mission. The Breakneck fight runs in three phases: Calixte retreats when damaged and brings Wyverns and Minotaurs, returns surrounded by Harpies, and makes its final stand in a room with little cover. Vex projectiles from the pillars can detain Guardians in bubbles, which disables abilities including Supers, so shoot them before they reach you.