Navigating the complex world of Zenless Zone Zero can be overwhelming for new players, especially when it comes to understanding the primer kit system. In 2025, this feature has become even more integral to gameplay progression, making it essential for agents to master if they want to excel in New Eridu's dangerous Hollows.

What is a Zenless Zone Zero Primer Kit?
The Zenless Zone Zero primer kit system serves as both a progression mechanism and a reward structure within the game. Essentially, these are specialized challenges that test your combat abilities, strategic thinking, and resource management in the Hollow Zero zones - particularly the Withered Domain and Inferno Reap areas.
For those unfamiliar with the system, primers are categorized into Standard and Special variants, each requiring specific conditions to be met during operations. Have you ever wondered why some players seem to progress faster than others? The primer system might be the missing piece in your gameplay strategy.

Standard Primers: Your Gateway to Better Rewards
Standard Primers in the Zenless Zone Zero ecosystem focus on fundamental gameplay aspects. These include:
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Combat Efficiency Optimization Test - Requires obtaining two different Advanced Resonium II simultaneously
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Corruption RES Stress Test - Challenges players to clear operations with 5 active Corruptions
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Logistics Capability Test - Tasks agents with earning 15,000 Gear Coins in a single round
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Health Awareness Training - Requires collecting 10 Concentrated Medicine Bangboo Plug-Ins in one operation
What makes these primers particularly valuable in 2025 is the enhanced reward structure HoYoverse implemented in the recent update. Completing these challenges not only provides immediate benefits but contributes to your Inter-Knot Credits, raising your account's overall standing.
Special Primers: For the Elite Agents
If you're looking to push your skills to the limit, Special Primers in Zenless Zone Zero offer the ultimate challenge:
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Ruthless Deadheading - Clear the Withering Garden: Core
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Rigorous Trimming - Clear the Withering Garden: Core with Ether Activity -3
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Innocent Cutting - Maintain at least 75% HP for all squad members
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Ultraviolet Sterilization - Clear with 5 Corruptions active
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Quick Pruning - Complete the final battle in under 3 minutes

The 2025 update has significantly increased the difficulty curve for Special Primers, but the rewards have scaled accordingly. Isn't it satisfying when the game properly rewards your skill and dedication?
Inferno Reap Primers: The Ultimate Challenge
For veteran players seeking the pinnacle of challenge, the Inferno Reap primer series tests your damage output against Nineveh:
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Scissor Test - Deal 5,000,000 DMG in a single operation
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Cut 'em Down - Deal 10,000,000 DMG
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Weeding - Deal 15,000,000 DMG
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Pruning - Deal 20,000,000 DMG
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Plow with Blades - Deal 25,000,000 DMG
With the introduction of new agents in 2025, these damage thresholds have become more achievable, but they still represent a significant challenge for most players.
How to Track Your Primer Progress
One of the most useful quality-of-life improvements in the 2025 update is the enhanced Compendium interface. To check your Zenless Zone Zero primer kit progress:
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Open the main menu
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Navigate to the Compendium
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Select the Primer tab
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Review your completed and in-progress primers
This centralized system makes it much easier to plan your gameplay sessions around specific primer objectives.

The Hidden Lore Behind Primers
What many players don't realize is that the Zenless Zone Zero primer kit system isn't just about gameplay mechanics - it's deeply woven into the narrative. Each completed primer unlocks excerpts from Ray's Research Log, providing fascinating insights into Hollow Zero and the wider world of New Eridu.
For example, the Scott Gardener primer, unlocked by completing all Standard and Special Primers in the Withered Domain, reveals crucial information about the White Star Institute's research. These story elements have become increasingly important in 2025, as the game's narrative has expanded significantly.
Maximizing Your Primer Efficiency
For players looking to optimize their Zenless Zone Zero primer kit completion strategy, consider these tips:
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Focus on Standard Primers first to build your resource base
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Use appropriately leveled agents for Special Primers - overleveling makes some challenges too easy
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Save your best W-Engines and Bangboos for Inferno Reap primers
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Team composition matters - certain agents excel at specific primer challenges
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Don't forget that primers reset with major updates, so prioritize completion before version changes
The 2025 meta has shifted toward more technical play, rewarding precise execution over raw stats. How have you adapted your playstyle to meet these new challenges?
Conclusion: The Evolving Primer System
The Zenless Zone Zero primer kit system continues to evolve as one of the game's most engaging progression mechanics. What started as a simple challenge system has grown into a complex web of gameplay incentives, narrative delivery, and skill assessment.
As we move deeper into 2025, expect HoYoverse to continue expanding this system with new challenges and rewards. For agents willing to put in the effort, the primer system represents one of the most efficient paths to progression in Zenless Zone Zero.
Have you completed all the available primers? Which one do you find most challenging? The community continues to debate the optimal strategies for each, but ultimately, your approach will depend on your unique agent roster and playstyle preferences.