Archuk emerges as the primary antagonist early in the narrative, commanding the Blood Pack mercenary group that assaults the human colony on Fehl Prime in 2183. This attack specifically targets a major Systems Alliance pharmaceutical production facility. Archuk personally directs the ground assault, orchestrating the destruction of multiple Alliance Marine shuttles during their attempted landing. Only one shuttle, transporting Delta Squad, survives the crash, though Blood Pack forces execute several Marines immediately after impact.

Visibly scarred and possessing sharp teeth, Archuk demonstrates exceptional resilience in combat. He withstands multiple assault rifle rounds and survives a grenade detonation at close range, necessitating specialized tactics to breach his defenses.

Following the crash, Archuk openly challenges the surviving Marines to direct confrontation. Lieutenant James Vega accepts, engaging him in single combat to distract the Blood Pack. Archuk initially dominates the duel, leveraging his heavy shields and physical strength to overpower Vega and nearly kill him. Delta Squad intervention proves critical: Nicky deploys a combat drone to overload Archuk's shields, enabling Vega to damage his armor, while Milque delivers the fatal headshot with a sniper rifle.

Archuk's death leaves Brood as the sole survivor of his unit. Brood is subsequently captured by Delta Squad.