Zenless Zone Zero: Deadly Assault Guide & Teams

Hey, Proxies! A fresh round of the "Deadly Assault" event is here, and I've got your back with a full guide and the best team setups to tackle it. Nine stars? We're grabbing them all!

From September 5th to September 19th, Zenless Zone Zero is hosting the latest Deadly Assault event. This event isn't too brutal overall—you can get all the film rewards as long as you get six stars in the three levels. Whether you're a new or a vet, this guide's got everything you need: Buff breakdowns, boss strategies, and team recommendations. Let's jump right in!

Deadly Assault Rules

Deadly Assault is one of Zenless Zone Zero's tougher challenge modes, running from September 5th to September 19th. It refreshes every two weeks on Fridays at 04:00 (server time), alternating with the Shiyu Defense event. Here's the catch: you can't use duplicate agents or Bangboos in your lineups. The event features three stages, with a total of nine stars up for grabs. Snagging six stars is enough to claim all the Polychrome rewards, so don't stress if you can't max it out.

To give you an edge, the event offers three buff effects to choose from: Fiery Assault, Artful and Harnessing Change. These buffs can seriously amp up your team's performance—it's all about picking the right one for your playstyle. Let's break them down next, along with strategies for each stage.

 

Buff Effects Analysis

Here's the scoop on the three buffs you'll be working with:

Fiery Assault:

• When there are 1/2 Agents with Attack specialty in the squad, the whole squad deals 20%/40% bonus DMG.

• After triggering a critical hit, the Agent's Electric DMG increases by 30%; for Agents with Attack specialty, their CRIT DMG further increases by 40% for 5s. Repeated triggers reset the duration.

Artful:

• Agent DMG increases by 20% and Physical DMG increases by an additional 20%.

• After inflicting an Attribute Anomaly on an enemy, the enemy's DEF decreases by 10% for 10s. After inflicting Disorder on an enemy, the enemy's DEF further decreases by 25% for 10s. Each effect's duration refreshes individually.

Harnessing Change:

• Ultimate DMG increases by 30%. When launching Ultimate, the Agent's ATK increases by 15% for 15s. Repeated triggers reset the duration.

• After enemies become Stunned, their Stun DMG Multiplier increases by 35%.

In this Deadly Assault stage, all three buffs have good versatility. These are the current buffs available for this season of Deadly Assault. It would be wise to familiarize yourself with them, as they can help net you large Performance Points, leading to an easier time getting 3-star ratings. It can also help you better understand the boss you'll be up against.

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Stage 1 Boss Analysis & Team Recommendations

Boss: The Defiler

Weaknesses: Physical & Electric Resistance: Ice

Current Intel:

• When an Agent hits The Defiler with Defensive Assist, the whole squad gains 1 stack of Adjudication; when an Agent knocks down The Defiler attacking in mid-air, the whole squad gains 4 stacks of Adjudication. Adjudication can stack up to 6 times and lasts for 30 seconds. Repeated triggers reset the duration.

• For each stack of Adjudication, the Agent's CRIT DMG is increased by 8%.

• The Defiler receives 25% less Attribute Anomaly DMG.

• When an Agent causes Impaired status, they gain 2500 Performance Points; when an Agent shoots down The Defiler while it's attacking in mid-air, they gain 1500 Performance Points, up to a maximum of 5000 Performance Points.

There is key mechanic to watch out for:

The first enemy introduces a new boss—the Defiler—with dual weaknesses to Electric and Physical. Successfully triggering Parry Support grants powerful buffs, making this fight a true test of your parrying skills.

Team Recommendations

The boss takes reduced damage from Anomaly-based attacks, so avoid using Anomaly teams. Instead, bring strong Assault or Crit/HP-build teams. Strong recommendations include:

• Seed dual Assault comps
• YiXuan synergy setups
• Anby follow-up attack teams
• Evelyn support formations
• Harumasa optimized squads

New players can even use Nekomata or Billy effectively.

⚠️ Note: The Defiler has frequent invincibility frames, which can make point-maxing challenging. Don’t blame your agents—just keep refining your strategies, and you’ll still be able to clear with full points!

BUFF Fiery Assault
Seed	Soldier 0 Anby	Trigger	Mercury
Seed	Soldier 0 Anby	Astra Yao	Mercury
Seed	Nekomata	Rina	Butler
Seed	Harumasa	Trigger	Butler
Soldier 0 Anby	Astra Yao	Trigger	Plugboo
Evelyn	Lighter	Astra Yao	Snap
BUFF Harnessing Change
Harumasa	Qingyi	Astra Yao	Plugboo

 

Stage 2 Boss Analysis & Team Recommendations

Boss: Miasmic Fiend

Weaknesses: Ether & Physical Resistance: Fire

Current Intel:

● When Miasmic Fiend is affected by Attribute Anomaly, it takes 8% bonus Anomaly DMG from Agents, stacking up to 6 times; activating Miasmic Shield clears all stacks, with each stack increasing the reduction efficiency of Miasmic Shield by 2.5%.

● When Agents bait Miasmic Fiend's ground attack into detonating at least 5 Miasma Pools at once and avoid being hit by the attack and pool explosions, they will earn 1,700 Performance Points, up to a maximum of 5,000.

⚠️ Key mechanic: When the Miasmic Fiend - Unfathomable jumps and tries to hone Miasmic Pools on you, you must dodge it before it detonates and causes immense damage to your active character. Always dodge and detonate the enemy’s Miasmic Fiend Pools—this significantly boosts your Tactical Score!

To do this, observe the red highlight on the floor where there will be two circles on it; one for the entire circumference of the attack and the other to indicate when it will detonate.

💡 Fallback option: If you lack ideal agents, you can still brute-force it with a well-built Yixuan team. Keep practicing—you’ll clear it!

Team Recommendations

The second team recommendation is for the boss [Miasmic Fiend].Every time the enemy enters an Anomaly state, your agents' Anomaly damage against it increases. Combined with its Physical and Ether weaknesses, this fight is practically made for anomaly-focused agents like Jane and Vivian.

The optimal team is: Jane + Vivian + Yuzuki

● No Yuzuki? Use Astra Yao instead

● No Jane? Try Miyabi + Vivian + Yuzuki or Yanagi + Vivian + Yuzuki

BUFF Artful
Miyabi	Vivian	Alice	Miss Esme
Miyabi	Alice	Yuzuha	Miss Esme
Yuzuha	Vivian	Alice	Miss Esme
Yanagi	Jane Doe	Yuzuha	Bangvolver
Vivian	Jane Doe	Yuzuha	Bangvolver

 

Stage 3 Boss Analysis & Team Recommendations

Boss: Miasma Priest

Weaknesses: Ether Resistance: Ice

Current Intel:

• When the Miasma Priest switches phase, their Anomaly Buildup RES increases by 10% and CRIT DMG taken increases by 30%. This effect can stack up to 2 times and is cleared when Miasmic Shield breaks.

• When an Agent successfully performs 3 Defensive Assists within 3 seconds, earn 1,000 Performance Points. A maximum of 5,000 Performance Points can be obtained.

There is key mechanic to watch out for:

Rely on Defensive Assists
The Miasma Priest uses long attack combos. Dodge red cues, but counter gold cues with Defensive Assists to earn Performance Points.

Break the Shielded State
After taking enough damage, it gains a Miasma Shield, turns aggressive, and moves rapidly while cloaked. It reappears to attack—time your dodges carefully.

Watch for its final 3-hit combo: it disappears before each strike. All three hits have gold cues—perfect for Defensive Assists.

Team Recommendations

For its Ether weakness, we recommend using Yixuan's team, Seed's dual-Assault comp, or Zhu Yuan's team.

— If you don't have Yixuan or Zhu Yuan, you can also try a follow-up attack team, Evelyn's support squad, or even No. 11's Fire team—though these may require higher skill execution.

BUFF Harnessing Change
Ju Fufu	Yixuan	Pan Yinhu	Belion
Pulchra	Astra Yao	Yixuan	Resonaboo
Astra Yao	Qingyi	Zhu Yuan	Resonaboo
BUFF Artful
Vivian	Yuzuha	Alice	Miss Esme
BUFF Fiery Assault
Seed	Zhu Yuan	Nicole	Butler

 

Conclusion

This is all for this round of the "Deadly Assault" event. As long as you use the right team and play style, you can get all the rewards.

Need a quick power boost to chase those full stars? Swing by LDShop for  Monochrome top up  discount. It’s the easiest way to beef up your roster and dominate Deadly Assault. Grab those discounts, level up!