Killstreaks have always been a thrilling aspect of the *Call of Duty* series, and in *Black Ops 6* Zombies, they transform into potent Support items that can unleash devastating attacks on zombie hordes. The Dark Ops Challenge 'Harbinger of Doom' specifically rewards players for mastering this feature.

Best Maps and Modes to Kill 100 Zombies with One Killstreak in Black Ops 6

*Black Ops 6* Zombies offers various modes for players to tackle the undead, including Standard, Directed, and the seasonal Jingle Hells mode. While Directed mode is popular among those grinding for camos due to its more manageable matches, it doesn't provide the large zombie hordes necessary for the Harbinger of Doom challenge. Therefore, Standard mode is the optimal choice for this task.

When it comes to selecting the right map, players should prioritize those with ample open space to effectively deploy their Support items. Maps like the Shipwreck on Terminus and the spawn area of Liberty Falls near Pump & Pay are ideal due to their expansive layouts, which are perfect for calling in Killstreaks to achieve 100 zombie kills in one go.

Best Support to Use to Kill 100 Zombies with One Killstreak

To successfully kill 100 zombies with a single Killstreak and complete the Harbinger of Doom Dark Ops Challenge, you'll need to utilize one of *Black Ops 6*'s top Support items. The Chopper Gunner and the Mutant Injection stand out as the most effective choices. The Chopper Gunner allows you to rain down fire with a powerful minigun from above, while the Mutant Injection transforms you into a formidable Mangler for a limited time. Both options grant invulnerability and boast significant damage potential.

Players who have advanced through the game's Military Ranks can craft these Support items at a workbench for 2,500 Salvage. For those looking to conserve resources, alternative methods include defeating special or elite enemies, completing S.A.M. Trials, or using Loot Keys on maps like Terminus and Liberty Falls. However, these methods depend on RNG and luck, making crafting the preferred approach before tackling the challenge.

Best Strategies to Use

To maximize your chances of success, it's crucial to attempt this challenge in the higher rounds, specifically between Rounds 31-40, where larger zombie hordes spawn. Activating the Rampage Inducer can further boost zombie spawn rates and speed, filling the map with enemies ready to be taken down.

For the Mutant Injection, gather a substantial horde of zombies in a confined area with multiple nearby spawn points, such as the Rec Yard on Terminus, Backlot Parking on Liberty Falls, or the Oubliette room on Citadelle des Morts. Once a large group is amassed, activate the Mutant Injection and focus solely on melee attacks, aggressively eliminating as many zombies as possible.

Using the Chopper Gunner is more straightforward but can be challenging to execute. Gather a significant horde in an open area during Round 31 or later, then call in the Chopper Gunner to unleash a barrage from above. Ideal locations include the Shipwreck on Terminus, Backlot Parking on Liberty Falls, or the Town Square spawn area on Citadelle des Morts.

By following these strategies, you'll be well-equipped to kill 100 Zombies with one Killstreak and successfully complete the Dark Ops Challenge in *Call of Duty: Black Ops 6*.