[3.6] Whispering Ice Occultist vs Synthesis Bosses

I finally spawned that insanely RNG gated Cortex thing (on the 72nd try - FU whoever designed this!). So here's all you need to know about the Synthesis bosses: only one of them can hurt you with this build, and only with the 12% resist penetration mod. Can use Purities or flasks if your gear is not very good.

Altered: physical + cold damage. Augmented: physical + fire damage. Twisted: lightning damage. Rewritten: physical + lightning damage. His big laser can hurt at high levels with nasty mods. The Cortex: physical + lightning damage. I tried to dodge the first guy for the challenge, but after failing that just facerolled the rest and only dodged what looked like 1-shot attacks, although probably nothing could kill me there. Too bad about the challenges though. Extra life and AoE mods don't help at all.

PoB snapshot of the character in the video: https://pastebin.com/MDWJEw2s

Link to the build: https://www.pathofexile.com/forum/view-thread/2256360

Music: Simon Patterson - Whites Of Her Eyes