Deadly Assault Guide and Reset
☆ New: Tier List Maker & Co-Op Board!
★ Upcoming: Version 2.6, Sunna, & Aria!
☆ 2.5 Debut: Ye Shunguang & Zhao
★ 2.5 Rerun: Alice, Soldier 0 Anby, & Astra
☆ Tier Lists: Agents | W-Engines | Bangboos | Teams
★ Redeem Codes for free Polychromes!
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!
| Endgame Guides | |
|---|---|
 Shiyu Defense |
 Deadly Assault |
List of Contents
Deadly Assault Latest News
New Boss and Squad Building Guide
It was announced in the Version 2.5 Livestream that a new boss will be introduced in the Deadly Assault lineup in Version 2.5! Additionally, the new Squad Building Guide will be made available for Proxies to peruse.
The Squad Building Guide will give Proxies a preview of the teams used by other Proxies against a particular boss, which can be used as inspiration for their own team lineups!
Deadly Assault Reset
Deadly Assault Reset Calendar
Deadly Assault Stages For This Phase
| Deadly Assault Stages and Weakness | ||
|---|---|---|
 The Defiler |
 Notorious - Marionette |
 Miasma Priest |
 
|
 
|
|
Click on the boss icon to jump to a stage guide!
These are all the current enemies in the January 16, 2026 update for Deadly Assault.
All Bosses in 2.5
| Phase | Bosses | ||
|---|---|---|---|
| 1 | The Defiler |
Notorious - Marionette |
 Miasma Priest |
| 2 |  Primordial Nightmare |
 Unknown Corruption Complex |
 Wandering Hunter |
Deadly Assault Buffs For This Phase
| Buff | Deadly Assault Buff Effect |
|---|---|
 Focus Energy |
• Agent ATK increases by 16%, and enemy Stun DMG Multiplier increases by 30%. • When in Ether Veil, Agent attacks that hit enemies ignore 10% of Physical RES and 15% of DEF. |
 Mutation |
• Agent ATK increases by 25%, Anomaly Proficiency increases by 40. • After inflicting Attribute Anomaly on enemies, their All-DMG RES is reduced by 10%, and Agent Attribute Anomaly DMG against them is increased by 30% for 15s. Repeated triggers reset the duration. |
 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%. |
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 you earn large Performance Points, making it easier to get 3-star ratings.
It can also help you better understand the boss you'll be up against.
Deadly Assault Reset
| Deadly Assault Reset Date and Countdown |
|---|
| January 30, 2026 |
Deadly Assault usually resets every other Friday. This resets all your progress, allowing you to collect the rewards again upon completion.
Season resets will also change the boss lineup and buffs available to you. For the current version, the next phase of Deadly Assault will reset on January 30, 2026.
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.
The Defiler Stage Guide
The Defiler Stage Details
| Stage Boss Information | |
|---|---|
 The Defiler
|
|
| Weaknesses | Resistances |
| Enemy Details | |
|
• Suitable for Agents with Attack specialty.
• 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 rest for 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. |
|
The Defiler Best Teams and Buffs
| Best Teams & Bangboo | Buff |
|---|---|
|
Focus Energy |
|
Harnessing Change |
|
Focus Energy |
|
Mutation |
Characters selected in one stage cannot be used in other stages. Save characters for different stages and form your teams carefully.
How to Beat The Defiler
Destroy the Blade During the Tsunami Attack
The Defiler's deadliest attack is its Miasma Tsunami, reminiscent to Nineveh's Ether Wave attack. She will charge up a massive attack before setting off an explosion that is guaranteed to one-shot your active character.
To negate this, destroy the massive sword that the Defiler will implant into the ground during initiating this attack. Doing so will form a barrier you can use to wait out the tsunami.
Chain Defensive Assists Against Miasmic Troopers
Another notable attack by the Defiler is where she floats out of the arena and sends forth illusory Miasmic Troopers holding riot shields to charge at you.
When you see these mobs, be sure to use your Defensive Assists on each hit to destroy the illusions, negate any incoming DMG, and render the Defiler vulnerable for a short time!
Use Defensive Assists Against Miasmic Blades
Finally, the last attack you need to pay attention to is the Miasmic Blade attack, where the Defiler flies out of reach and sends forth waves of Miasma at you.
Use Defensive Assists against this attack to send the waves back to the Defiler and forcefully ground her. This will also render her vulnerable for a short time, allowing you to deal your own bouts of DMG!
Notorious Marionette Stage Guide
Notorious Marionette Stage Details
| Stage Boss Information | |
|---|---|
|
Notorious - Marionette
|
|
| Weaknesses | Resistances |
| 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 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 |
|---|---|
|
Mutation |
|
Mutation |
|
Harnessing Change |
|
|
Mutation |
|
Focus Energy |
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
Destroy the Dance Partner Often
The best way to defeat the Notorious Marionette is to keep destroying their partner as much as possible. You can gain about 5,000 Performance Points!
Avoid Spinning Twin Attacks
The Notorious Marionette separates and spins around, dealing a lot of DMG to your characters if they've been caught. Best switch to another character as you see their attack cues to counter them!
Miasma Priest Stage Guide
Miasma Priest Stage Details
| Stage Boss Information | |
|---|---|
|
Miasma Priest
|
|
| Weaknesses | Resistances |
| Enemy Details | |
|
• Suitable for Agents with Rupture specialty.
• 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. |
|
Miasma Priest Best Teams and Buffs
| Best Teams & Bangboo | Buff |
|---|---|
|
Harnessing Change |
|
|
Mutation |
|
Mutation |
|
Harnessing Change |
Characters selected in one stage cannot be used in other stages. Save characters for different stages and form your teams carefully.
How to Beat Miasma Priest
Use Defense Assists for Points
To gain a maximum of 5,000 Performance Points, you must continuously perform three consecutive Defensive Assists during the Miasma Priest's barrage of attacks.
Use Ultimates Often
Whenever the Miasma Priest reels away to gather power, counter it by activating an agent's ultimate as it strikes to avoid taking damage while also dealing it.
How to Play Deadly Assault
Deadly Assault Guide
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 identify each boss's weaknesses and resistance 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 choose 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
Guides by Category
News and Game Info
Redeem Codes
Characters
Tier Lists
W-Engine
Drive Discs
Signal Search
Bangboo
Events
Travel
Shops
VR Device
Enemies
Bosses
Hollow Zero
Shiyu Defense
Rally Commissions
Arcade (Godfinger)
Items
Commissions
Mewmew Medals
Trust Events
Suibian TempleZenless Zone Zero Tips and Tricks
Comment
Anonymous about 1 monthAstra, Evelyn and Dialyn can clear without problem the new boss with 3* also Sanby, Orphie and Trigger can clear the Lucia boss too.
Author
Deadly Assault Guide and Reset
Rankings
Gaming News
![Animal Crossing: New Horizons Review [Switch 2 First Impressions] | New Horizons For a New Generation](https://img.game8.co/4385884/a908aab7ee788da594b0869c36b5f7f4.png/show)
![Dynasty Warriors: Origins Review [Switch 2] | A True Port of the Three Kingdoms](https://img.game8.co/4386955/fc84e4c96cfbcfd846169d889b647590.jpeg/thumb)
![Hytale Review [Early Access] | More Than a Chip Off the Old Block](https://img.game8.co/4386695/52f04edef0c9a56832d4c8d50783d173.png/thumb)
Popular Games
Genshin Impact Walkthrough & Guides Wiki
Zenless Zone Zero Walkthrough & Guides Wiki
Umamusume: Pretty Derby Walkthrough & Guides Wiki
Clair Obscur: Expedition 33 Walkthrough & Guides Wiki
Wuthering Waves Walkthrough & Guides Wiki
Digimon Story: Time Stranger Walkthrough & Guides Wiki
Pokemon Legends: Z-A Walkthrough & Guides Wiki
Where Winds Meet Walkthrough & Guides Wiki
Pokemon TCG Pocket (PTCGP) Strategies & Guides Wiki
Monster Hunter Wilds Walkthrough & Guides Wiki
Recommended Games
Fire Emblem Heroes (FEH) Walkthrough & Guides Wiki
Yu-Gi-Oh! Master Duel Walkthrough & Guides Wiki
Pokemon Brilliant Diamond and Shining Pearl (BDSP) Walkthrough & Guides Wiki
Diablo 4: Vessel of Hatred Walkthrough & Guides Wiki
Super Smash Bros. Ultimate Walkthrough & Guides Wiki
Elden Ring Shadow of the Erdtree Walkthrough & Guides Wiki
Monster Hunter World Walkthrough & Guides Wiki
The Legend of Zelda: Tears of the Kingdom Walkthrough & Guides Wiki
Persona 3 Reload Walkthrough & Guides Wiki
Cyberpunk 2077: Ultimate Edition Walkthrough & Guides Wiki
All rights reserved
Copyright © 2024 HoYoverse, COGNOSPHERE. All Rights Reserved.
The copyrights of videos of games used in our content and other intellectual property rights belong to the provider of the game.
The contents we provide on this site were created personally by members of the Game8 editorial department.
We refuse the right to reuse or repost content taken without our permission such as data or images to other sites.
then dont open game8 you stupid bastard