rpg cartoon video where they accident killing a boss because another party died and left it at one health

They're rowdy, they're ragtag, they're misfits turned mercenaries for hire. Vox Machina is more interested in easy money and cheap ale than actually protecting the realm. But when the kingdom is threatened by evil, this boisterous crew realizes that they are the only ones capable of restoring justice.

An assassin goes into a video game is required to kill the seven bosses to get out of the game if he dies in the game he dies in real life.