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Qualification Assessment is the first zone in Hollow Zero Withered Domain in Zenless Zone Zero (ZZZ). See the recommended level, all enemies and bosses, best characters, Resonia, and floor walkthroughs for the entry stage here!
| Hollow Zero Withered Domain Guides | ||
|---|---|---|
Qualification Assessment |
Old Capital Metro |
Construction Ruins |
Abandoned Skyscraper |
Withering Garden |
Inferno Reap |
List of Contents

Qualification Assessment becomes available immediately after unlocking the Hollow Zero in the game. You can unlock Hollow Zero after finishing Chapter 1 Intermission, which will come after completing the Cat's Lost and Found commission.
| DPS | |
|---|---|
| Sub-DPS | |
| Stun | |
| Support |
These are the best Agents to use for the Qualification Assessment stage in Withered Domain.
| Enemies | Weakness | Resistance |
|---|---|---|
| None | ||
| None |
| # | Floor 1 Walkthrough |
|---|---|
| 1 | ![]() Collect all the rewards in the lower half of the area. Try to avoid the red tiles to prevent getting high pressure at the start. |
| 2 | ![]() Defeat the enemy blocking the upper part of the area of the first floor. You will encounter a few thugs like a Bulky Intimidator. |
| 3 | ![]() Collect all the rewards on the upper part of the area before proceeding to the exit. They should help you with the final fight on this floor. |
| 4 | ![]() Head to the exit after getting all the rewards. You will need to defeat a Ruthless Fiend and Arlaune to proceed to the next floor. |
| # | Floor 2 Walkthrough |
|---|---|
| 1 | ![]() There will be no enemies at the start of floor 2. Feel free to collect all the rewards before going to the next panel. You can destroy the damaged walls by repeatedly tapping on it to get more rewards. |
| 2 | ![]() On the next set of tiles, you can choose to collect all the rewards or head straight to the exit. |
| If you think you have enough resources to pull through, it's best to head to the exit immediately to save time. Otherwise, collect all the rewards, but prepare to fight one battle and obtain more pressure as you move. | |
| 3 | ![]() Defeat the Dullahan at the exit to complete the level. |
| Enemies | Weakness | Resistance |
|---|---|---|
| None | ||
| None | ||
| None |
| # | Floor 1 Walkthrough |
|---|---|
| 1 | ![]() Move through the tiles until you get your first Resonia and some Gear Coins. Note that the leader of the team can affect the set of Resonia given throughout the stage. |
| 2 | ![]() Continue moving and complete your first battle against Pyromaniacs and Raiders. |
| 3 | ![]() Proceed to the next area using the HDD and get a character. It will be one of the characters you selected at the start of the level. |
| 4 | ![]() Continue moving until you reach the Shop. Buy everything you need using Gear Coins, or you can save and use them on the next Shop to buy Resonia or catalyze them. |
| 5 | ![]() Enter through the exit of floor 1. Follow the markers and defeat all enemies to reach the next floor. |
| # | Floor 2 Walkthrough |
|---|---|
| 1 | ![]() At the start of floor 2, collect all the tiles, such as the Gear Coins, Resonia, and the last character on your roster. Those can help you with the final fight later on. |
| 2 | ![]() Proceed to the Random Tile in the middle to proceed. It will take you to a Bonus Area where you can get additional Gear Coins, healing, reduce pressure, and Resonia. |
| 3 | ![]() Fight the enemy blocking the path to the upper part of the area. It will unlock additional rewards around the tile after beating all the enemies there. |
| 4 | ![]() Pass through all the tiles except for the red one to get all the rewards left. Also, spend all your Gear Coins in the Shop, as you won't be able to use them anymore after this part. |
| 5 | ![]() Head to the exit and fight the last waves of enemies, including the boss, Notorious Dullahan. |

Freeze, Fire, and Ether Resonia are the best Resonia attributes in Qualification Assessment, as they are the weaknesses of most enemies that will appear, including the bosses. Obtaining characters with the same attribute as those will enhance their overall strength when acquiring those types of Resonia.
| Resonia | Effects |
|---|---|
|
|
Agent Ice DMG increases by 15% |
|
Upon triggering Shatter, the Agent inflicts additional Daze equal to 140% of Impact on the target if the target is not Stunned. |
|
Freezing an enemy increases the Agent's DEF by 5%, stacking up to 4 times. |
|
Launching an EX Special Attack grants the Agent 8 stacks of Ice Mark. |
|
When an Ultimate hits an enemy and deals Ice DMG, the Agent gains 36 stacks of Ice Mark. |
|
Freezing an enemy increases all squad members' CRIT DMG by 40% for 15s. |
|
Shatter DMG increases by 50%. When Shatter is triggered, hitting enemies increases the Agent's Ice Anomaly Buildup Rate by 20% for 5s. |
|
Triggering Shatter leaves an icy mist that lasts 10s. This effect can trigger once every 10s. Ice DMG against enemies caught in the mist deal 80% more CRIT DMG. |
|
Freeze lasts 2s longer. |
|
Freezing an enemy grants all squad members 12 stacks of Ice Mark. |
|
Triggering Ice Mark increases the Agent's Ice Anomaly Buildup Rate by 30%. |
|
Dealing Fire DMG grants 1 stack of Motivation to all squad members. This effect can trigger once every 10s. |
|
Inflicting Burn grants 1 stack of Motivation to all squad members. |
|
Agents Fire DMG increases by 15%. |
|
Fire CRIT DMG increases by 20%. |
|
Burn DMG increases by 40%. |
|
When an Agent has Motivation, their Fire DMG attacks have 15% bonus PEN Ratio. |
|
Agent Fire Anomaly Buildup Rate increases by 30%. |
|
Burning enemies have their ATK reduced by 15%. |
|
Burn lasts 2s longer. |
|
Launching an EX Special Attack grants 1 stack of Motivation to all squad members. |
|
Dealing Fire DMG triggers Blaze, dealing Fire DMG equal to 1200% of ATK. This effect can trigger once every 8s. |
|
Increases the effect of Motivation to 200% of its original value. |
|
All squad members' Fire DMG increases by 15%. |
|
All squad members' Fire DMG increases by 10%. |
|
All squad members' Ether DMG increases by 15%. |
|
All squad members' Ice DMG increases |
|
All squad members' Ether DMG increases by 15%. |
|
All squad members' Ice DMG increases by 15%. |
|
When an Agent with Motivation Burns an enemy, the Burn DMG interval is reduced by 30%. |
|
Each point of Anomaly Proficiency increases the Agent's Ether DMG by 0.2%, up to a maximum increase of 30%. |
|
Corruption DMG increases by 40% |
|
Agents deal 30% more DMG to Corrupted enemies. |
|
Inflicting Corruption on an enemy grants 1 stack of Activity to all squad members. Corrupted enemies have their Ether Res reduced by 20%. |
|
Dealing Ether DMG to an enemy increases Attribute Anomaly DMG 50% against the target for 10s. |
|
Increases the chance for [Ether] Resonia to appear. |
|
Agent Ether DMG increases by 15%. |
|
Agent Ether Anomaly Buildup Rate increases by 15%. |
|
Launching a Chain Attack increases all squad members' Anomaly Proficiency by 25 for 15s. |
|
Corrupted enemies have their ATK reduced by 15%. |
|
Dealing Ether DMG grants all squad members 1 stack of Activity. This effect can trigger once every 10s. |
|
Launching an EX Special Attack grants 1 stack of Activity to all squad members. |
|
Corruption lasts 2s longer. |
|
Each Standard Ether type Resonium owned increases Agent Ether Anomaly Buildup Rate by 4%, up to a maximum increase of 32%. |

Most of the Resonia you will get are random unless they are indicated in the Shop or special event tiles. It means you won't have full control over which Resonia will appear, but you can always refresh it if you have unlocked Resonium Converters from the Combat Configuration!
| Stage | Rewards |
|---|---|
| Edge |
|
| Frontline |
|
| Regular Rewards |
|---|
|
|

The level you should aim for when taking on the Qualification Assessment should be around 15 to 20 for both Characters and W-Engines to survive and finish all the stages.
Use the necessary level up and promotion (ascension) materials to increase their level. You can use the Combat Simulation to get those rewards if you don't have enough!

| Hollow Zero Modes | |
|---|---|
Lost Void |
Withered Domain |
| All Lost Void Stages | |
|---|---|
| Task Force Investigation | Perpetrator Battle |
| Shadow Operation | Battlefront Purge |
| All Withered Domain Stages | |
|---|---|
| Qualification Assessment | Old Capital Metro |
| Construction Ruins | Abandoned Skyscraper |
| Withering Garden | Inferno Reap |
| Hollow Zero Upgrades and Mechanics | |
|---|---|
| Resonia | Corruption |
Qualification Assessment Guide



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