More the merrier. Here are 15 times you fight multiple bosses at once.
Shadow of Yharnam – Bloodborne
The Shadow of Yharnam summons multiple bodies, all with a unique attack and its own health bar. You have to learn the attack pattern of each one, take them out quickly, and adjust appropriately when they change their tactics. They won’t play nice, either. Every opportunity they get to attack, they’ll take it. So you need to try to bring the battle to a swift end.