Resonance
Common58.5%ObjectiveOptional
Equipped four or more pieces of equipment with the same set bonus for the first time.
Equip four pieces of gear that share the same set bonus at once. The set bonus is the golden text on an item's stats - get four matching and it (and this) activate. Easiest early with common looted sets: don't chase a specific one, just hold four of whatever set you've got the most of and slot them together.