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Apex-class ARC machine and the deadliest boss in the game. The Matriarch projects an energy shield that blocks all incoming projectiles and has the ability to summon waves of ARC reinforcements. She only spawns during Matriarch events on Dam Battlegrounds, Blue Gate, and Spaceport. She NEVER appears on Stella Montis or Buried City.
The Matriarch cycles through attack phases. She projects an energy shield that blocks all projectiles, forcing players to find openings or wait for the shield to drop. She summons waves of ARC reinforcements including Wasps, Hornets, and other enemies to overwhelm players while she attacks from range. Her red core and yellow leg joints are the primary damage targets. At low health she becomes enraged with faster summoning cycles and more aggressive attacks.
The Matriarch is a boss-class ARC machine with 20,000 HP and a danger rating of 10/5. As a boss-tier enemy, the Matriarch hits hard, soaks damage, and turns most solo runs into a coffin if you engage without preparation. Group up, bring high-DPS weapons, and only fight it when the loot table is worth the noise — every shot is a beacon for nearby Raiders.
The Matriarch has 2 weak points: Red core (central, exposed during shield-down phases) (3x), Yellow leg joints (2x). Hitting the red core (central, exposed during shield-down phases) is the highest-value target — every shot landing there does 3x damage compared to body shots, which means you can drop the Matriarch with roughly 134 well-placed precision rounds from a mid-tier rifle. Body shots will work, but you'll burn through three to four times the ammo and pull every ARC patrol within a few hundred metres.
You'll find the Matriarch spawning in Dam Battlegrounds, Blue Gate, Spaceport. Common drops include ARC Circuitry, Advanced ARC Powercell, Complex Gun Parts, Magnetic Accelerator and 1 other crafting components, which makes it a priority target for Raiders running crafting routes for the Workshop tech tree — the rare components from this enemy fast-track several mid-game upgrades. For full map context on where the Matriarch spawns, see our map guides, or compare it against the rest of the ARC bestiary on the enemies index.