Hollow Zero Lost Void Guide for Zenless Zone Zero (ZZZ)

In Special Operations, players can enjoy the Hollow Zero story commissions. These commissions provide additional lore for Hollow Zero, along with completion rewards. After players have unlocked Hollow Zero, they can complete the following Special Operation-related commissions:

If players are having trouble finding the NPCs, they should select to Track the Hollow Zero commission so the game will prioritize its completion. Players can track commissions through the Inter-Knot Schedule menu.

When players are setting up their Agents and Squad for the Investigation, they may opt to enable the Power Adaptation feature. This feature syncs the following Agent stats based on the Investigation Difficulty Level:

• Level
• W-Engine Level (Uses your Currently Equipped W-Engine or Auto-Recommended W-Engine)
• Skill Levels and Core Skill Enhancements
• Drive Disc Levels (Uses your Currently Equipped Discs or Auto-Recommended Disc Sets)

This feature does not affect an Agent's Mindscape Cinemas. In addition, the feature will only replace the relevant stat or equipment if the player's own Agent build is not up to par with the Investigation Difficulty recommendations.

For example, if your own Agent has the wrong W-Engine equipped, the feature will provide a different W-Engine instead (up to A-Rank). If your Agent does not have any Equipment equipped, the feature will provide a "Fairy" recommended set of Equipment instead.

If the Agent is either at or above the recommended Level for the Difficulty, they will not be able to use the Power Adapation feature.

Every season, Battlefront Purge will feature Seasonal buffs that may prove useful for certain Agents. These Agents will receive Gear updates, and can be Trialled by any player during that season, even if they are not currently featured on the Exclusive Channel.

However, if you play on a lower Difficulty than recommended, Trial Agents, unlike your own Agents, will sync down to the appropriate stats. They are always subject to the Power Adaptation feature. As a result, they may perform worse than your own Agents depending on your account's investment.

When selecting Agents for the Investigation Squad, certain Agents will be able to use the Potential Catalyst feature. When investigating, if the Agent has a Potential Catalyst, they may obtain exclusive Gear that can upgrade or change the Agent's skills.

Note: Only one Agent per Investigation may have a Potential Catalyst enabled. If your squad has multiple Agents with Potential Catalysts, the game will force you to get exclusive Gear for only one Agent. If this Agent dies in combat, you cannot receive exclusive Gear for other Agents. If you choose to not use any Agent-exclusive Gear, the game will provide you with other types of Gear instead.

While players may receive Gear for Agents with Potential Catalysts, they may also receive Gear of other types too. These other Gears work the same way as most Resonia in Hollow Zero: they can provide an additional Bangboo or supportive (or negative!) effects in combat.

Gear can level up based on the following conditions:

• Receiving multiple copies of the Gear
• Receiving multiple Resonia of the Same Type as the Gear

However, the type of Gear you can receive is random; it is not directly correlated to the chosen Squad or Resonium kit for the Investigation. For example:

• If your Resonium Kit is only of the Dexterity type and you receive a Dexterity Gear, the Gear will level up according to how many Dexterity Resonia you have. If you had 4 Dexterity Resonia, the Dexterity Gear would be Level 2.
• If your Resonium Kit is only of the Dexterity type and you receive a General Gear, the Gear will level up according to how many times you receive another copy of the Gear, or if you obtain multiple General Resonia. If you do not receive anything related to the General Gear, it will remain at Level 1.

As a result, since obtaining certain types of Gear is randomized, players are highly recommended to select Gear based on the Resonia they collect during the run, or the Gear most compatible with the Squad and playstyle.

To participate in Battlefront Purge, players are required to select a Difficulty level for the Investigation. There are 5 Difficulty Levels to choose from, with the first 4 being available by default.

To unlock Difficulty V, players will need to complete at least 1 Investigation at Difficulty IV (Recommended Agent Level of 50).

To unlock Ether Activity for Difficulty V, players will need to complete 1 Investigation at Difficulty V. By adding Ether Activity effects, players can increase the amount of Shadow Crystal Data received from clearing the Investigation.

By completing Investigations in the Battlefront Purge, players can receive a set amount of Shadow Crystal Data, which is used to contribute towards the Weekly Bounty and Investigation License progress.

Every week, for the player's First Clear, they will receive double of the Shadow Crystal Data for the run. For example, clearing Difficulty V as your First Run will net you 4,000+4,000 Shadow Crystal Data, for 8,000 Total. Any further runs, up to 45 total runs weekly, will continue to grant Shadow Crystal Data and other Regular Rewards.

Players are not required to complete lower Difficulties to receive the First-Time Rewards. Any clear of a higher Difficulty will reward the cumulative amount, saving you from having to run the lower Difficulties ever.

In addition, if your account's Inter-Knot Level is too high compared to the Investigation Stage's level, you will not receive any Shadow Crystal Data for completing the Investigation. You can still receive the other Regular Rewards, up to the weekly limit of 45 runs.

Before players can begin their run of Battlefront Purge, they need to select an Investigation Strategy, which provides beneficial effects based on certain areas you may encounter during the run. However, outside of combat-based Strategies, you may not encounter specific areas as they are randomized per run.

As a result, to make the most effective use out of your Investigation Strategy, players are recommended to check the Map before selecting an area and allocated path.

For some areas known as Complex Areas, they can feature multiple area types. In Complex Areas, your Investigation Strategy will apply to the relevant part of the map. For example, if you have Looting Strategy and the Complex Area features "Encounter" as the 2nd part of the Area, you will only get the Strategy Effect in the 2nd half of the Area, not the 1st.

At lower Difficulties, the amount of Investigation Strategies players can use are fewer and limited to specific types. At higher Difficulties, players have more options available; as the Investigation Map becomes more complex, it provides additional opportunities to benefit from the chosen Investigation Strategy.

When participating in the Battlefront Purge, players are required to select a Seasonal Buff of the options available. These buffs are beneficial in combat, as they increase the Squad's damage potential, on top of the Gear, Resonium Kits, and Investigation Strategy.

As these Seasonal Buffs rotate every season (not every week like the Bounty Commissions), players can take advantage of them through their own Agents or the Trial Agents provided. For example, if the season specializes in Ice combat, players can trial the Ice Agents that are available. As such, players should find at least 1 Seasonal Buff usable for the Investigation.

At this time, there is no information on when the next set of seasonal buffs will occur.