MediumConfidence: 0.95
Like a Firefly
Detonated the Firefly gadget during battle 50 times.
Global unlock
37.6%
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What to do next
SourceDetonate the Firefly gadget 50 times in battle.
Throwing it when enemies bunch up and then setting it off stacks the count quickly.
Pair it with the other gadget achievements and grind them together in street fights.