History of Arc Avoidance

'''Arc Avoidance''' is a 25-point triumph from the Nightfall strike The Hollowed Lair: finish it without taking any Arc damage during the final encounter, against the Hive boss Fikrul the Fanatic.

== How to complete ==

• Players on the Bungie forums report that the triumph checks the whole fireteam, not only you. One bad hit from a teammate or an enemy can fail it. Coordinate before the fight.
• Sources of Arc damage that failed runs: lightning from the Abomination-type ad that spawns during the boss fight, the boss's stomp attack, and Arc grenades or weapons you or teammates use.
• Bring non-Arc weapons and abilities (Solar, Void, Stasis or kinetic), and keep distance from the Abomination.
• You can retry only by relaunching the strike. Wait for the Nightfall to be in rotation (it returned as a Grandmaster per reset articles).

The triumph was added in Season 12. This info comes from forum posts, which can be outdated or buggy.