Build is a pretty simple one I use to go on solo archon hunts and Steel path. I don't specialize in Hyper focused builds but [Grendel] doesn't really need one. So this build focuses on armor stripping. 200% power strength giving you instant armor strip from pulverize. Since most of grendels abilities proc toxin i figured running an [Archon Continuity] would be helpful especially since he can instanly get 10 procs of toxin and viral from regurgitate. With 3 tauforged crimson you can get an easy 200% duration on top of your 200% power strength, making this a solid build with no downsides. The aura is completely flexible.

--Archon shards--
Tauforged amber (+37.5 casting speed)

Tauforged azure (+75 energy max)

Tauforged crimson ×3 (+45 ability duration)