Still no Forma installed. Mods not fully maxed, when possible, to not make Forma necessary till getting involved in +100lvl missions. Not tested in Steel Path yet since I'm still dealing with the stars chart's missing nodes.

I almost reached 100 stacks in solo missions at the second attempt, when still learning to handle it, as soon as levelled it up and made this build. It does level up quite easily with zero knockdown in Endless bounty on Deimos, where I mainly use [Nidus] right now {while waiting my [Ember Prime] get Fire Walker from [Nezha], which I plan doing soon in a matter of few days}.
Reached 25 waves, but could last much longer {my squad just had to dismantle}, in a Defense mission at Akkad {Eris}. Next challenge: 1h Kuva Survival at Taveuni {Kuva Fortress}!

Made this loadout which include, under the name [Nidus] INFECTI {see my other builds with this name} temporarily: Phage + Zymos + Venka.

School: Zenurik

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A note about the use of Augments, based on suggestions I got:

• Insatiable is a possible option but might as well just bring Natural Talent and cast Virulence more.

• Abundant Mutation gets you killed at high enough levels.

• Larva Burst's only real value is in being able to deactivate Larva for faster recast.

• [Teeming Virulence] is only really useful on primary weapons with <20% base cc, which basically excludes all of the good primaries.