Surprisingly easy, although this is only Normal.

Don't use cooldowns at pull, wait for the first Siphon Corruption which does massive amounts of damage.
Ice Block it, then lust + all cooldowns and nuke. The rest of the fight is straightforward, you can't really die.

I played with Glacial Insulation for extra armor and 1x Eldritch Warding for even more shield. Reducing damage taken is much more important than healing through it.

Enjoy :)

Music provided by Argofox:
Meizong & Yeeflex - Elevate
https://youtu.be/c-cK6e-BXXI