History of Synchronized Breathing

Overview

Synchronized Breathing is a Ghosts of the Deep triumph for completing the Ecthar encounter with every fireteam member activating an underwater rune without drowning or being hit by Ecthar.

How to complete

Learn the underwater rune layout and bubble locations before attempting the condition. Reveal the three required symbols with Deepsight, assign one to each player, and have each member activate a matching underwater rune. Activations need not be simultaneous. Use air bubbles to replenish pressure resistance, give teammates space around shared bubbles, and detour around Ecthar rather than running directly toward him. Return to the surface after activating your rune.

Complete the normal Lucent Hive and Vestige of Light sequence to start damage, then defeat Ecthar while preserving the rune, drowning and boss-hit conditions for the team.

Rewards

Its reward includes 50 Legendary Mark.