
Corrosive Projection
Enemies lose -18% Armor

Nidus Prime
Link Gun Platform
Gun Nidus - Parasitic Link tanking and Teeming Virulence primary crits while a Helminth buffs weapons. Ravenous optional. Nidus Prime's extra polarities cut Forma versus base Nidus for the same polarity story.
Alternative builds
Build dossier · Mutation Battery
Aura + Exilus on top, then eight general slots in two rows of four.

Corrosive Projection
Enemies lose -18% Armor

Power Drift
+15% Ability Strength · +30% Chance to Resist Knockdown

Blind Rage
+99% Ability Strength · -55% Ability Efficiency

Transient Fortitude
+55% Ability Strength · -27.5% Ability Duration

Primed Continuity
+55% Ability Duration

Stretch
+82.5% Ability Range

Teeming Virulence
Virulence Augment: Hitting 4 enemies with Virulence grants 200% Primary Weapon Critical Chance for 15s.

Parasitic Vitality
Parasitic Link Augment: Nidus and any ally he's bound to gain 4% Max Health per Mutation during Parasitic Link.
Adaptation
When Damaged: · +10% Resistance to that Damage Type for 20s. Stacks up to 90%.

Umbral Intensify
+44% Ability Strength · +11% Tau Resistance
Recommended pair first, then flexible swaps.
Helminth over Ravenous — Teeming Virulence crits and Parasitic Link tanking while a weapon buff and guns clear. Larva optional grouping.
No shields — Mutation stacks fuel everything. Undying spends stacks to cheat death. Parasitic Link can attach to companions; Parasitic Vitality turns stacks into a massive health pool. Arcane Persistence pairs well once armor is high enough.
Crit chance, Link, and Larva coverage.
Roar multiplies Teeming crit guns. Keep Link as the DR engine.
Link / stacks tank + Helminth gun buff — Larva optional grouping.
Link the point, shoot.
Skip nest babysitting.
Not stealth.
Guns cover travel.
Teeming crits help hunts.