Just waited 40 minutes for the event,
completed the set up bit before the boss,
the second the boss loses their shield it dies.
Doesn’t count as me beating the boss, 'cause I couldn’t tag the boss in time.
They really should give those bosses a some sort soft invincibility, where their hp can only go down to 1 for like 5-10 seconds after the shield drops so that the classes that don’t have an AOE like volley or blizzard get to tag the boss before it dies.