Strength in Numbers Trophy in Red Dead Redemption 2
Strength in Numbers
Red Dead Online: Complete a Free Roam mission as part of a Posse with at least 2 members.
How to unlock Strength in NumbersFor this trophy you can either create your own posse and invite everyone on the server (or a friend) or you can join a random posse that already exists. You can join a posse by pressing Options, Online and then Posse Up. If you want to create your own: Whilst online, go => Posse => => Form a Posse. Click "Invite to Posse" to send invites and hope that randoms join or press to invite a friend.
Once you are in a posse with at least one other person complete any free roam mission. These are marked by a black figure with an orange background.