Guide to defeating Zekvir on difficulty '?' as a shadow priest

[Hpellipsis-whisperwind (Hpellipsis)]

@Doness-kargath

Sorry for the necro, but this was linked in another thread.

Let Me Solo Him (Zekvir Hard Mode) Shadow Priest Guide

Changelog Update: September 26th Hotfixes Spittle and Carapace timings seem unchanged. Egg spawn animation significantly increased (Don’t get caught out and use crash too early), hatching time increased to 20 seconds. Boss HP is now 182m, was 195m. Egg HP 7.8m, was 11m. Intro Let Me Solo Him is an achievement earned by defeating the Hard Mode level of the Bonus Delve Zekvir’s Lair. This level is unlocked after clearing any Level 10 Delve with lives remaining. This is the hardest challenge …

If you need a more thorough guide, that also covers “??” version.