Can someone please explain the Trio fight (Atziri)?

Hi there,

I've just started doing Atziri runs for the first time (3 so far... all been successful). But I do tend to struggle with the Trio fight. I haven't been able to do it deathless.

Why is it that most people prioritise Tittie Bitch, then Dagger Guy, then the Cycloner? What differences does it make who you kill first? Is there some kind of buff the bosses get with each death?

When I've done this, I've been fine with the first 2 kills (Tittie Bitch and Dagger Guy), but when it comes to the Cyclone guy everything starts going insane. There are like 1,000 tittie bitches spawning and clouds darkening my visibility and my life gets drained at a ridiculous rate... I have no idea what's happening but I just start popping flasks like a mad-man and try stay alive.

Also, I've noticed that people prioritise armour for this fight. Do the bosses do any spell damage or is it all physical?

Can someone please explain what exactly is going on with this fight and why people prioritise things the way they do?

FYI my build is Incinerate Scion prioritising block.

http://pathofexile.gamepedia.com/Apex_of_Sacrifice

Section - Guardians

http://pathofexile.gamepedia.com/Vaal_Temple_Map <<< details

Given your build I would do cycloner second and dual striker last, using a Rise of the Phoenix shield an d a ruby. Just run/whirling blade away from him, enduring cry when you get far enough, the adds will give you 4 charges if you got the one from oak, then immortal call and face tank. Or use like a level 18-19 CwDT with immortal call to cast it automatically as you face tank. With RoTP + ruby you will mitigate almost all of the damage done by both him and the reflect of your incinerate.