On July 27th, Zenless Zone Zero launched the first phase of its Version 2.1 update: [Critical Assault].
This round’s Critical environment is highly specialized—almost tailor-made for specific character roles. With the debut of the new boss “Namable Name”, the overall difficulty has spiked. However, securing a full-clear is still achievable by mastering the right strategies and team compositions.
This guide breaks down the mechanics of all three Critical bosses and offers optimized team setups. Whether you’re a newcomer or a veteran, you’ll find the perfect squad and tactics to dominate the challenge.

Current Critical Buff Mechanics Breakdown
This phase features three specialized buffs, each amplifying a major team archetype:
- Buff #1 – Ether/Ice Focus
- Boosts HP cap, Ultimate DMG, and Energy/Switch efficiency (Ideal for Lycaon teams).
- Buff #2 – Physical Anomaly (Disorder)
- Lowers enemy DEF after inflicting Anomaly, with extra bonuses for Physical DMG (Tailored for Jane/Ben teams).
- Buff #3 – Break & Assist Focus
- Enhances Stagger DMG, Assist Skill efficiency, and Break multipliers (Best for Ellen/Soukaku teams).
BOSS Strategies & Meta Comps
1. Defiled Deacon (Ether Weak / Ice Resistant)
- Key Mechanics:
- Weak to Ether (Purple), demands perfect parries to break “Defiled Shield.”
- Lycaon dominates with counter-focused playstyle.
- Top Teams:
- Lycaon (DPS) + Qingyi/Corin + Flex (Buff #1)
- Alternative: Zhu Yuan + Qingyi + Nicole (Buff #3) – Less efficient shield break.
2. Defiled Wraith: Namable Name (Phys/Ether Weak / Fire Resistant)
- Key Mechanics:
- Airborne attacks require dodging ground AoEs for max score.
- Physical Anomaly teams melt this boss (Jane/Ben thrive).
- Top Teams:
- Jane (DPS) + Piper/Vivian + Rina (Buff #2)
- Budget Option: Billy + Vivian + Rina – Strong F2P alternative.
3. Notorious Pompeii (Fire Weak / Electric Resistant)
- Key Mechanics:
- Stack 4 “Disadvantage” layers via parries to stun and boost CRIT DMG.
- Fire DPS (Ellen) or Break teams excel.
- Top Teams:
- Ellen (DPS) + Lucy + Flex (Buff #3)
- Alternative: Grace + Anby + Nicole – Anomaly-focused but slower.
Key Takeaways
- Flexibility: Even mid-tier units (e.g., Billy, Zhu Yuan) can clear with proper buff synergy.
- Priority: Build around your strongest DPS + matching buff.
- Score Tips: Master boss mechanics (e.g., parry timings, Anomaly stacking) for max rewards.
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