Threw 1 lvl 118 DoT on him at beginning. He went into meditation phase, killed the 4 warders, he then died to the DoT & vanished/poofed! No loot at all but got the 5 day lockout for him. So don't DoT him if you're high level or same thing may happen.
Well the way I have seen guilds in past do this event when its not bugged is: Start off by killing balances while MT is on Zun. Can just start with killing one Balance at a time. Bring say Balance of fury down to 80% and stop and move to next Balance and do the same. Pretty much just bring down like that one at a time. 80% 70% 60% 50% 40% blah blah. Zun will go active and inactive during this event just have MT on him with auto attack on the entire time. When the blanaces get to 20% I think they poof and just Zun is left sorry been awhile last I did this event. Trick is dont let the balances get too lopsided in HP or you may have to start over.
Kvxe Pirik "meditates" (becomes unhittable) every 10% of his hp. The Balances MUST match Kvxe's, or he'll become stronger according to which aneuk is not balanced. They will regain 100% of their hp once Kvxe becomes active again.
My raid is usually split in two when we engage the Balances, each handling two aneuks. When Kvxe reaches 40%, we focus our dps on Rage and Fury, then dps Speed if we have time.
Kvxe will go inactive for the last time at 30%. Once he awakens, have your raid dps him for the win. This is the most fun encounter in all of Tacvi! =)