How do i kill the chromatic demon after i realse it i know fire spells hurt it when its ice but how do i kill himi just cant get it

whoops sorry im refering to the demon on the second level of watchers keep
and i am in soa and not tob so its an soa question lol

the way to kill it is explained in the dungeon, the way the mages planned to kill each other explains the attacks you need to use on the demon, I plugged away at it for 5 minutes with fire arrows thinking it would fall in it's ice form, but it had shifted to the air form and I wasn't hurting it, make sure you use attacks that hurt it where it's vulnerable and hit it hard and consistently

Fire - Ice
Air - Poison

Hit him with your tanks, Whirlwind comes in handy if you have it