What to know
- Hethereau’s Keeper is an S-Rank Arc tied to the Justice Executioner boss encounter
- You must raise your Heat Level to 4 stars by fighting police NPCs
- The boss is Level 99 and requires strong preparation and survival playstyle
- Defeating it unlocks Officer Whisker summon and powerful ATK boosts
Hethereau’s Keeper is one of the more unique S-Rank Arcs in Neverness to Everness, blending open-world chaos mechanics with a high-risk boss fight. Instead of a fixed dungeon or anomaly, this Arc is unlocked through escalating your wanted level and surviving a brutal encounter. If you enjoy challenge-based unlocks, this one stands out as both intense and rewarding.
NTE Hethereau’s Keeper Arc stats and effects
| Feature | Details |
|---|---|
| Arc Name | Hethereau’s Keeper |
| Rarity | S-Rank |
| Unlock Method | Defeat Justice Executioner boss |
| Trigger Condition | Reach 4-star Heat Level |
| Boss Level | 99 |
| Attribute Type | Solid |
| Key Bonus | ATK +15%, Boss Damage +15% |
| Special Unlock | Officer Whisker summon |
Hethereau’s Keeper focuses heavily on offensive scaling, especially against bosses, making it ideal for high-difficulty encounters. The Solid-type restriction means you’ll need compatible characters, but the payoff is significant.
Key stats and effects explained
| Attribute | Value |
|---|---|
| Base ATK | 33 |
| ATK Bonus | 11.00% |
| Tier Restriction | Solid characters only |
Justice Executioner Effect:
- Increases ATK by 15.00%
- Increases damage dealt to bosses by 15.00%
Special Ability Unlock – Officer Whisker:
- Summons Officer Whisker to assist in combat (floating companion)
- Deals 100% of your ATK as damage per hit
- Duration: 30 seconds
- Cooldown: 60 seconds
This summon adds consistent pressure during fights, acting like a sustained DPS companion rather than a burst skill.
How to get the Hethereau’s Keeper Arc in Neverness to Everness
This event does not rely on a fixed map location, making it accessible across most urban areas where police NPCs patrol. You can trigger the sequence anywhere law enforcement is active, which gives you flexibility but also means you need to control the situation carefully as chaos escalates quickly.
Summoning the Justice Executioner
Step 1
Locate a police officer in any city zone and initiate combat. This immediately starts building your Heat Level.
Step 2
Continue fighting responding officers as reinforcements arrive. Do not disengage, as maintaining combat is essential to increasing Heat.
Step 3
Watch your Heat Level rise through star ratings. The goal is to reach 4 stars, which signals maximum escalation.
Step 4
Prepare as the boss spawns once you hit 4 stars. At this stage, the Justice Executioner will appear. This is a Level 99 enemy, so survival matters more than aggression.
Defeat the Justice Executioner
The Justice Executioner resembles a mechanical spider fused with a police vehicle, combining mobility with heavy-hitting attacks. Its attack patterns can overwhelm you if you play aggressively.
Step 5
Prioritize dodging over attacking. The boss deals high burst damage, so avoiding hits is critical.
Step 6
Carry healing items like candies and food. Sustained fights require constant recovery.
Step 7
Attack only during safe windows after its major moves. Overcommitting will likely get you eliminated.
Step 8
Finish the fight patiently rather than rushing damage. This is a stamina battle, not a DPS race.
If you fail to defeat the boss, you face consequences like jail time or a penalty of 30,000 Fons, so commitment is important before starting.
Claim Hethereau’s Keeper arc after victory
Step 9
Head to the Security Office after defeating the boss.
Step 10
Locate the receptionist NPC Raven.
Step 11
Interact and claim your S-Rank Arc reward.
Hethereau’s Keeper unlock benefits
Hethereau’s Keeper stands out because it rewards both mechanical skill and preparation. Unlike standard unlocks, it tests your ability to survive under pressure while managing escalating combat conditions.
The Officer Whisker summon alone adds consistent DPS value, and the boss damage bonus makes it a staple for tougher encounters.
| Reward | Description |
|---|---|
| Hethereau’s Keeper Arc | S-Rank Solid Arc |
| Officer Whisker Ability | Combat summon support |
| ATK Boost | +15% |
| Boss Damage Bonus | +15% |
These rewards significantly boost your boss-fighting efficiency, making this Arc especially valuable for endgame content.
If you’re aiming to strengthen your build for high-level content, this Arc is absolutely worth pursuing despite its difficulty. The combination of strong offensive stats and a unique summon mechanic makes it one of the most impactful S-Rank Arcs available. Approach the fight prepared, stay patient during the encounter, and you’ll walk away with a powerful upgrade that pays off across multiple game modes.
