Conquer the "Harbinger of Doom" Dark Ops Challenge in Call of Duty: Black Ops 6 Zombies! This guide details the optimal strategies to achieve 100 zombie kills with a single Killstreak.

Best Maps and Modes for Maximum Zombie Mayhem

To tackle the Harbinger of Doom challenge, Standard mode is your best bet. Directed mode, while popular for camo grinding, lacks the dense zombie hordes needed for this challenge. Choose maps with ample open space to maximize your Killstreak's effectiveness. Terminus's Shipwreck and Liberty Falls' Pump & Pay spawn area are prime locations.

Top Killstreaks for Obliterating Undead Hordes

The Chopper Gunner and Mutant Injection are your go-to Killstreaks. The Chopper Gunner provides aerial minigun devastation, while the Mutant Injection transforms you into a powerful Mangler. Both offer temporary invulnerability and incredible damage output.

Craft these at a workbench (2500 Salvage) or try your luck obtaining them through special enemy kills, S.A.M. Trials, or Loot Keys on Terminus and Liberty Falls (RNG dependent). Crafting beforehand is recommended.

Strategic Approaches for Maximum Efficiency

Aim for rounds 31-40 to ensure massive zombie spawns. The Rampage Inducer further boosts zombie numbers and speed, accelerating your progress.

Mutant Injection Strategy: Gather a large horde in a confined area with multiple spawn points (e.g., Terminus's Rec Yard, Liberty Falls' Backlot Parking, or Citadelle des Morts' Oubliette). Activate the Injection, utilize melee attacks aggressively, and maximize your kills.

Chopper Gunner Strategy: Assemble a large horde in an open area (e.g., Terminus's Shipwreck, Liberty Falls' Backlot Parking, or Citadelle des Morts' Town Square). Call in the Chopper Gunner and unleash a rain of fire from above.

Master these strategies, and the Harbinger of Doom challenge will be yours!