Deadly Assault is an endgame battle mode in Zenless Zone Zero (ZZZ) where Proxies will face 3 bosses. Check out when Deadly Assault resets, how to beat each stage, and rewards here!

Deadly Assault Reset

Deadly Assault Reset Calendar

Deadly Assault Stages For This Phase

Deadly Assault Stages and Weaknesses
Notorious Marionette	Typhon Destroyer	Notorious Pompey

Click on the links to jump to a stage guide!

These are all the current enemies in the April 4, 2025 update for Deadly Assault.

List of All Enemies

Upcoming Deadly Assault Phases

Date	Effect
Apr. 18	Notorious - Dead End Butcher Sacrifice - Bringer Unknown Corruption Complex

Deadly Assault Buffs For This Phase

Buff	Deadly Assault Buff Effect
Swift Advance	• DMG dealt by Agent Aftershocks and Chain Attacks is increased by 30%. • When an Aftershock or Dodge Counter hits an enemy, all squad members' ATK is increased by 15%, and CRIT DMG is increased by 40% for 20s. Repeated triggers reset the duration.
Worn Out	• The Daze dealt by Agents is increased by 10%, and the DMG dealt by Chain Attacks is increased by 50%. • When Chain Attacks hit an enemy, the enemy's Stun DMG Multiplier is increased by 25%, and all squad members' ATK is increased by 20% for 15s. Repeated triggers reset the duration.
Blazing Chill	• Agent Fire Anomaly Buildup Rate and Ice Anomaly Buildup Rate increase by 20%, and ATK increases by 25%. • When inflicting an Attribute Anomaly on enemies, the Agent restores 400 Decibels and Anomaly Proficiency is increased by 80, lasting 15s. Decibels recovery can be triggered once every 15s.

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're going to be up against.

Deadly Assault Resets Every Other Friday

Deadly Assault will reset every other Friday. This resets all your progress so that you can collect the rewards again upon completion.

Season resets will also change the boss lineup and buffs available to you.

How to Unlock Deadly Assault

Reach Inter-Knot Level 40 and Unlock Shiyu Defense

Deadly Assault can be unlocked after reaching Inter-Knot Level 40 and unlocking the Shiyu Defense game mode. Once done, clear the Deadly Situation commission to access the game mode.

Shiyu Defense Guide and Reset

Notorious Marionette Stage Guide

Notorious Marionette Stage Details

Stage Boss Information
Notorious - Marionette
Weaknesses	Resistances
Ether Ice	None
Enemy Details
• DMG dealt by Boss enemies increases by 25%. When a clone is destroyed or when the main body is stunned, 1/5 stacks of On Thin Ice is inflicted on Boss enemies respectively. Each stack of On Thin Ice decreases the DMG dealt by the Boss by 5% and increases the Ice DMG and Electric DMG dealt to the Boss by Agents by 10%. On Thin Ice stacks will be reset when the enemy recovers from Stun. • Successfully destroying a dance partner grants 200 Performance Points. A maximum of 5,000 Performance Points can be obtained.

Notorious Marionette Best Teams and Buffs

Best Teams & Bangboo	Buff
	Blazing Chill
	Blazing Chill
	Worn Out
	Worn Out

Characters selected in one stage cannot be used in other stages. Save characters for different stages and form your teams carefully.

How to Beat Notorious Marionette

Minimize Using Slow Attacks

The Notorious Marionette is quite different from their usual form. In this form, they are merged together and would only separate when executing high-damage attacks.

After that, there will be a small lull moment where you can use your agents that have slower attack speed to DMG the boss. Otherwise, when the Marionette are attacking in tandem, it's best to use agents with faster speed or those who could dodge them easily.

Watch Out for Twin Ground Attacks

The Notorious Marionette will separate for a while and spin around to deal AoE DMG to your agents. It will have several fast golden attack cues, so you must pay attention to either dodge them or switch via perfect assists.

Avoid Twin Aereal Attacks

Another of the boss' signature attack is where they will once again separate but the white one will float up and plunge towards your agent while the other tanks your attacks.

This attack can significantly tear down your Agent's HP so it's best to dodge it before the white marionette lands down then go back to attacking them both.

Note that after this attack, they will execute their spin attack and the way to counter that is to immediately move away as they spin and once they finish spinning, go back to attack them again.

There also have another aerial attack where they both float up and plunge down one by one which is much easier to dodge since you can see the trajectory of where they'll land.

Typhon Destroyer Stage Guide

Typhon Destroyer Stage Details

Stage Boss Information
Typhon Destroyer
Weaknesses	Resistances
Electric	Fire
Enemy Details
• Agents inflict Overwhelmed when landing a Defensive Assist hit against a Boss enemy, and 3 stacks of Overwhelmed when accumulating 3 Defensive Assist hits and triggering Impaired. Each stack of Overwhelmed increases Daze by 15%, and Chain Attack and Ultimate DMG taken while Stunned by 10%. The enemy will fix the impaired parts and reset the impairment level while charging, and will reset its Overwhelmed stacks after recovering from Stun. • Assist Points are not consumed for this battle. • Successfully triggering a Perfect Assist grants 200 Performance Points. • Successfully causing Impaired grants 600 Performance Points. A maximum of 5,000 Performance Points can be obtained.

Typhon Destroyer Best Teams and Buffs

Best Teams & Bangboo	Buff
	Swift Advance
	Worn Out
	Worn Out

Characters selected in one stage cannot be used in other stages. Save characters for different stages and form your teams carefully.

How to Beat Typhon Destroyer

Frequently Dodge or Execute Assists

From the get-go, expect the Typhon Destroyer to be increasingly aggressive in its attacks, so it's best to either dodge or do assists to avoid tanking too much damage against this enemy.

Inflict Shock Effect

The best way to defeat the Typhon Destroyer is to inflict the Shock effect, slow it down, and stagger it. This will give you the opportunity to beat it a lot faster!

Notorious Pompey Stage Guide

Notorious Pompey Stage Details

Stage Boss Information
Notorious - Pompey
Weaknesses	Resistances
Fire	Electric
Enemy Details
• When the Agent hits the boss enemy with a Defensive Assist or Chain Attack, they applies 1 stack of Weakening to the target. For each stack of Weakening on the target, Agent CRIT DMG is increased by 10%. When the boss enemy has 4 stacks of Weakening, Defensive Assist will deflect the boss enemy's attack, causing a Stagger effect. • Successfully triggering a Perfect Assist grants 350 Performance Points. A maximum of 5,000 Performance Points can be obtained.

Notorious Pompey Best Teams and Buffs

Best Teams & Bangboo	Buff
	Worn Out
	Worn Out
	Blazing Chill

Characters selected in one stage cannot be used in other stages. Save characters for different stages and form your teams carefully.

How to Beat Notorious Pompey

What Out Land Mines

One of the things that make Notorious Pompey different from the normal variant is the fact that it can deploy several AoE Land Mines. It's visually presented a purple circle on the ground.

Keep an eye on it to avoid it and do not go tunnel vision on attacking the boss otherwise, this will significantly shave your Agent's HP without you noticing it much due to the fast-paced battle.

Hit All the Attack Cues

The Notorious Pompey is much easier to deal with as long as you counter all of it's red or golden attack cues by dodging it or switching agents via perfect assists.

If you happen to bring a stun specialist and manage to stun them, you can then dish out all your ultimates against them after all that countering.

How to Play Deadly Assault

Deadly Assault Guide

1. Use Appropriate Agents
2. Stage Effects and Buffs
3. Aim for a High Score
4. Reset Your Lineup if Necessary

Use Appropriate Agents for Each Battle

One thing to note when braving Deadly Assault is that previously used Agents and Bangboo cannot be used again in the next battle. Each and every battle will require unique teams.

In light of this, it would be wise to ascertain each and every boss' weaknesses and resistances before taking on the challenge. That way, you can formulate parties accordingly.

Take Advantage of Stage Effects and Buffs

Each stage in Deadly Assault will have stage effects that may make the battle a little more challenging than usual. Additionally, they will provide gameplay-based buffs, such as increasing the Anomaly Buildup Rate.

With this in mind, Proxies will be able to better formulate parties based on the buffs and effects each stage provides. Be sure to review the stage buffs and effects and strategize accordingly!

Aim for a High Score for Higher Ratings

In Deadly Assault, your performance rating will be based on how many objectives you can complete during battle. Completing an objective will increase your overall score.

Your scores will be determined by two things: Damage Score, which is determined by dealing a certain amount of DMG, and Mechanics Score, which is determined by performance such as using Perfect Assists and Chain Attacks.

Reset Your Lineup if Necessary

If you find that certain characters are necessary for other battles, you may reset your lineup to make them available for other stages even after using them in one. Keep in mind that this will reset your records.

However, this will not reset your progress. If you've already acquired three stars in one battle and you chose to reset your lineup, the rewards you can acquire for getting three stars will still be available to get!

Deadly Assault Rewards

Total Deadly Assault Rewards

Total Deadly Assault Rewards
Polychrome x300 Investigation Merits x720 Denny x25,000

Proxies will only have to obtain 6 stars to get all the Polychromes for Deadly Assault. That means each stage will only require you to achieve 2 stars if you're having a difficult time getting a 3-star.

Deadly Assault Rewards Per Star

Objective	Rewards
1-Star	Polychrome x50 Investigation Merits x80 Denny x25,000
2-Star	Polychrome x50 Investigation Merits x80 Denny x25,000
3-Star	Polychrome x50 Investigation Merits x80 Denny x25,000
4-Star	Polychrome x50 Investigation Merits x80 Denny x25,000
5-Star	Polychrome x50 Investigation Merits x80 Denny x25,000
6-Star	Polychrome x50 Investigation Merits x80 Denny x25,000
7-Star	Investigation Merits x80 Denny x25,000
8-Star	Investigation Merits x80 Denny x25,000
9-Star	Investigation Merits x80 Denny x25,000

Deadly Assault Achievements

Title	How to Get and Rewards
Raid Operation	Obtain 3 stars in Deadly Assault Polychrome x5
Blitz Breaker	Obtain 7 stars in Deadly Assault Polychrome x20 Blitz Operation Expert
Sweep the Battlefield	Obtain 9 stars in Deadly Assault Polychrome x20 Deadly Assault: Line Breaker

Zenless Zone Zero Related Guides

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