in the mission fight fire. the ach fire free zone. it saids "Do not allow the warlords to complete any of their ritual magic" dose anyone know what you have to do to get this ach?
When both warlords are alive (or inhabiting armors after dying) they do emotes: 'We begin...', 'We have half of the power...', 'Burn them, brother!'. That last one is when they cast Channeled Inferno AE - that's what you need to prevent. They gain 'power' for it by being alive (or inhabiting). Getting 'stunned' (when you damage them and they go inactive) resets that mob's power. Either kill at least one of them before they can get enough power (i.e. kill one warlord and then the armor he inhabits), or alternate between the two of them making them both get 'stunned' once in a while (and when they die, do the same for the armors they inhabit).