Hollow Zero Lost Void Guide for Zenless Zone Zero

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)

At Difficulties V and higher, you may only access the Power Adaptation feature for your current roster of Agents.

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.

Every season, Battlefront Purge will feature Seasonal buffs that may prove useful for certain Agents. These Agents have a "Potential Catalyst," which enables them to use Exclusive Gears in Lost Void. They can be permanently trialed in the Game Mode Battlefront Purge, even if they are not currently featured on the Exclusive Channel.

Trial Agents are only available at Difficulties IV and below. At Difficulties V and higher, you may only use your personal roster of Agents.

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 Exclusive Gear, the game will provide you with only General Gears instead.

While players may receive Gear for Agents with Potential Catalysts, they may also receive Gear of other types too. These other Gears, known as General Gears, work the same way as most Resonia in Hollow Zero: they provide a manual Bangboo skill, as well as various supportive effects in combat.

Players can unlock Gear by using Mottled Ether Particles, which you can obtain by clearing Battlefront Purge runs.

These Gear Effects are mostly beneficial, though powerful bonuses may come with harmful side-effects. For a better understanding of General Gears, see the in-game Exploration Collection's Gear Database. For any General Gears you have yet to unlock, they can be reviewed by speaking with Ray at the start of Battlefront Purge Floor 1.

General Gears level up whenever you obtain multiple Resonia of the Same Type as the Gear, or if you purchase a Suction Welding Torch - Solvent Launcher Resonium from the Bangboo Store. The Resonia fusions will provide one Gear Level at a time, whereas the Suction Welding Torch - Solvent Launcher will maximize one General Gear's level.

Except for the initial General Gear given by Ray, the type of Gear you can receive while exploring 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 have 4 Dexterity Resonia, the Dexterity Gear would be Level 2.
• If your Resonium Kit is only of the Dexterity type and you receive an [Ultimate] Gear, the Gear will not level up. If you do not receive anything related to the General Gear, whether it be Ultimate Resonia or the Suction Welding Torch - Solvent Launcher Resonium, it will remain at Level 1.

During a run, you can check your current Gear(s) and Resonium by accessing the side menu's Artifacts tab.

To participate in Battlefront Purge, players are required to select a Difficulty level for the Investigation. There are currently 6 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 Difficulty VI, players will need to complete at least 1 Investigation at Difficulty V (Recommended Agent Level of 60).

To unlock Ether Activity challenges, players will need to complete 1 Investigation at that Difficulty. By increasing the Ether Activity Intensity, players can earn additional Shadow Crystal Data. This is primarily useful if you want to work through the Investigation License levels faster.

There are some Exploration Missions only available to complete at higher Difficulties.

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.

If you have unlocked Task Force Investigation, the double reward mechanism mentioned above will be moved to that game mode instead. You will unlock Task Force Investigation upon clearing Battlefront Purge at Difficulty IV for the first time.

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

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 nodes 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, the Strategy Effect only works in the 2nd half of the Area, not the 1st.

At higher Difficulties, players will have more Investigation Strategies to choose from; as the Map becomes more complex, it provides additional opportunities to benefit from the chosen Investigation Strategy.

At Difficulties V and higher, players can unlock a feature called the Explorer's Badge. Every Investigation Strategy has its own Explorer's Badge Level, which increases by every Rank 3 General Gear you collect in a run.

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 Gears, Resonium Kits, and Investigation Strategy.

As these Buffs rotate every season, 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. There are also more general Seasonal Buffs available, such as for Stun specialties instead of a DMG Type. As such, players should find at least 1 Seasonal Buff useful for the Investigation.

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.

Players can only use the Trial Mode while completing the missions in Special Operations. As such, your Agents are pre-determined and cannot be changed. The only exception to this is Qualification Assessment.

In Perpetrator Battle, players can complete challenges using a solo Trial Agent for additional rewards. These challenges have two levels of difficulty: Low Activity and High Activity.

As the Activity increases, players will need to fulfill requirements that are more difficult to complete, in addition to encountering tougher enemies. The High Activity area is only accessible after the player completes the Low Activity area for the specific Agent. Players can review the Key Enemy Info or their previous Combat Records for additional assistance with completing the challenges.

For each Perpetrator Battle challenge, players are only allowed to use the specified Trial Agent in the squad, along with a Bangboo of choice. If players do not have a fitting Bangboo, they can use a Trial Bangboo instead. The squad will also receive a predetermined supply of Agent-Exclusive Gears, along with general or Type-based Gears and Resonia.

As the Trial Agent will not have additional support from other Agents, they will receive Tactical Enhancements, which can increase their combat potential. The Tactical Enhancement effects can be reviewed from the Activity section of the Challenge window.

If the player already owns the Trial Agent, they can opt to use their personal Agent instead.

For more information on what Trial Agents or Gears are, please see the relevant sections under Battlefront Purge.

While the game mode is permanently available in the Lost Void and has its own First-Clear bonuses and Challenge rewards, Perpetrator Battle also features event-exclusive rewards for completing the challenges within a time limit of 14 days.

At the start of the event period, players will only be able to complete the challenges for one new Agent initially. Each subsequent Agent takes 24 hours to unlock from the previous one. As such, players can only play all of the challenges and receive the event-exclusive rewards after approximately 3 event days have passed.

While waiting for new Agent challenges to unlock, players can try out the Perpetrator Battles from previous seasons instead.

If players do not complete the event before the time limit expires, the exclusive rewards will no longer be available. This leaves only the First-Clear bonuses and base Challenge rewards for players to receive.

A Shadow Operation is an alternative way to collect weekly Shadow Crystal Data, helping you complete Bounty Commissions and level your Investigation License.

The primary feature of Shadow Operation is that each stage has a unique environment: you may receive initial supplies for free, or have some features disabled to pose as a challenge.

There are currently 8 Shadow Operations, where each one unlocks whenever you complete the most recent stage.

You can only receive rewards when clearing a Shadow Operations stage for the first time. The weekly Shadow Crystal Data can only be obtained if you have not completed the Bounty Commissions for the week yet. Each stage awards 4,000 Shadow Crystal Data for your first time clear, and 4,000 for the first weekly completion in a Bounty Commission cycle.

This game mode also disables any Combat Potential bonuses you may have. You also cannot review an exclusive Exploration Collection, nor complete any Lost Void achievements when playing through the Shadow Operations.

Introduced in Version 2.0, Task Force Investigations are a new game mode in Hollow Zero: Lost Void. Here, players can visit the Hollows in a similar fashion to Battlefront Purge, but with a few key differences.

Task Force Investigation can only be unlocked after players have successfully completed their first Battlefront Purge run at Difficulty IV. As such, if there are any clarifications needed on the general gameplay, consult the Battlefront Purge section.

Task Force Investigation shares some general gameplay with Battlefront Purge: your squad goes through randomized maps, collects Resonia and level up General Gears, has Investigation Strategies and Ether Activities, and is a valuable source of Shadow Crystals and Shadow Crystal Data.

So what exactly is different? Well, Task Force Investigations...

• Does not feature Seasonal Buffs
• Removes the Double Shadow Crystal Data Weekly Reward from Battlefront Purge upon Unlock
• Provides a Weekly Bonus if you clear with a Featured Trial Agent
• Exclusive Gears have been "upgraded" to Tactical Prism Programs
• Bangboo Stores feature a unique item per run called Prime Zero
• Task Force Missions are exclusive to Trial Agents in your squad

For more information on each difference, consult the various categories under this section.

Every week, Task Force Investigations will introduce a new roster of Agents for players to use while exploring. Completing the Investigation with the Roster Agents will provide you with additional rewards.

After clearing your first Task Force Investigation for the week, players can obtain double the Shadow Crystal Data, allowing you to quickly finish your Bounty Commissions. This is significantly faster than clearing a Battlefront Purge at Difficulties lower than V.

The Trial Agent roster does not only include the ones featured for additional rewards; it includes every Agent who has Tactical Prism Programs in Task Force Investigations. This allows players to complete their Task Force Missions, which are unique to each applicable Agent, at any time.

Players can view what Tactical Prism Programs are available for an applicable Agent using the Potential Divergence button at the top of the Agent Selection screen. If the Agent cannot use Tactical Prism Programs, they will not have the option available.

Compared to Battlefront Purge, Trial Agents are not subject to the Power Adaptation feature. This is because Task Force Investigations only has one Difficulty mode available. Only your own Agents can be subject to Power Adaptation when selected. Additionally, you cannot use the Trial version of the Agent if you already own them.

Tactical Prism Programs are the updated version of Exclusive Gears for Agents. Tactical Prism Programs have two distinct features to them: Other Squad Agents can also equip their own Tactical Prism Programs within the same run, and you can choose which combat abilities to enhance as you progress through the run.

Just like any Gear Type, Tactical Prism Programs can level up. Unique to Tactical Prism Programs are Branches: Tactical Prism Programs can "branch out" into different upgrade effects, known as Path Alpha and Path Beta. So your Tactical Prism Programs may not upgrade the same way every run.

Tactical Prism Programs do not replace General Gears in Task Force Investigations, nor are they featured in Battlefront Purge runs.

You can obtain Tactical Prism Programs through any Combat - Gear or similar reward map nodes, including the Bangboo Store. At the Bangboo Store, only one Prism Program can be obtained during the run; this is called the Prime Zero item.

After you have purchased the Prime Zero item, you can no longer obtain additional Tactical Prism Programs through the Bangboo Store for that run.