All for One

Very rare2.0%

ObjectiveOptionalMulti-player

Completed every co-op Mission on Heroic difficulty.

Every mission completed in co-op on Heroic or higher - so a Heroic/Legendary co-op run for Heroes Rise covers it. You need at least one other player joined for the whole campaign, via matchmaking or a friend. Pairs with One for All.

All Halo 5: Guardians achievements

All for One

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