This Build is made for high Level Survival or Disruption missions, Especially for Steel Path where i am going to kill one or more Acolytes!
Because of that i use "Ensnare" as my Helminth Ability of choice!

Also use "The Lost" with "[Gaze]" to reduce Enemies Defense by 97% and of course keep up "The Vast Untime" all the time!

For Endless Missions you may Steal Weapons from Higher Enemies again every time you feel "weak"!
At this Point you just need to Disable (click again) or just let run out "The Vast Untime" and "Grasp of [Lohk]" and Steal Weapons again from Higher Enemies.
You need to "Loop" this Action over and over again if you feel "weak" later on in Endless Missions.
After a while you will get a "Feeling" for it ;)

If you're looking for a "Speed" Build for e.g. Exterminate Missions without you're going to kill an Acolyte, you can use this Build instead:
fuba | Xaku | Helminth: Empower | Fast Missions (e.g. Exterminate)