Arc Cataclysm

Arc Cataclysm is a Vanguard elemental medal triumph. Earn it by rapidly defeating 15 combatants with Arc damage while Arc surge is active.

How to complete

1. Play Vanguard playlist strikes (Strike/Nightfall) in a week where Arc surge is active.
2. Kill 15 enemies quickly with Arc damage (Arc weapons or Arc abilities). The medals scale: Arc Burst is 5, Arc Rush is 10, Arc Cataclysm is 15.
3. Wave-clearing Arc abilities and a Stormcaller, Arcstrider or Striker build help.

Caveat

Legacy medals are reported to no longer be earnable, so this may be unobtainable now. Added in Season 22.