My go to for everything past sorties - 2. ability also helps alot to boost single target dps on Liches / sisters / Acolytes

whenever shield is depleted just insta tap 3. ability again. If u tap while taking dmg + have the armor proc u can get 200k+ shields for 75 energy without any buildup required.
My highest achieved shield was around 20 million against a kuva lich.

Now updated with new arcanes giving u the ultimate godmode of tankyness :D
Build works Especially good with a [Kuva Zarr] as ur go to weapon. Combine 1. + 2. ability with the Zarrs Shotgun Mode and 1 tap all Liches.

Enjoy never dying ever again ;)

Archon shards is pretty optional : but Strenght / Max hp / Armor & 1x energy orb 75%

Helminth = very optional but Nourish,Roar,Eclipse,Gloom,Breach surge all great (Personally I use Roar to stack with my 2. ability to pretty much 1 shot any Kuva Lich / Sister with the Kuva Zarr setup below)
U can helminth 1. ability if u want the aoe cc / stun from [Nezha] 4, or u can helminth 4. ability if u wanna keep [Firewalker] for speed and heat priming, Just a matter of preference.

Arcanes are also very optional but I would run current build setup for absolute max tankyness or Energize / Primary / melee dmg arcane

U can play this as a budget version if u use Regular Flow / Remove Power Drift = U save 1 Umbra forma ;)

Link to my Kuva Zarr setup is here https://overframe.gg/build/616285/

If u wanna play the new syndicate mod, replace Augur Strenght & Reforma.
But I havent really tested that myself, u might also need more range to properly play it since it reduces ur range by 50%, or u wouldnt really be able to hit that many enemies with the 4.

If u are just starting out and u dont have any Umbra forma to spare : This would be the setup u run on a extreme budget