- What to know
- Update schedule and maintenance window
- Compensation rewards and free Oroberyl breakdown
- Performance optimizations and bug fixes
- Boss balance adjustment: Bone Crusher Vanguard
- New endgame mode: Umbral Monument
- Quality-of-life improvements that matter long-term
- A pivotal patch for Arknights: Endfield
What to know
- The update launches on February 12 (UTC+8) with short maintenance.
- Players receive 400 Oroberyls + 2 Emergency Sanity Boosters as compensation.
- The new Umbral Monument mode rewards up to 2,400 Oroberyls.
- Multiple quality-of-life fixes and boss balance adjustments are included.
The latest patch for Arknights Endfield is one of the most impactful updates so far. Beyond routine fixes, it introduces a structured endgame mode, significant performance optimizations, and over 3,000 Oroberyls in potential free currency. Whether you’re a daily grinder or someone waiting for late-game content, this update directly improves both progression and performance.
Update schedule and maintenance window
The servers will undergo maintenance on February 12 from 10:40 to 10:50 (UTC+8). During this period, all Endministrators will be logged out and unable to access the game.
| Region | Maintenance Time |
|---|---|
| UTC+8 | 10:40 – 10:50 |
| EST | 9:30 PM – 9:40 PM (previous day equivalent timezone conversion context applies) |
The downtime is brief, signaling a focused patch deployment rather than a massive infrastructure overhaul.

Compensation rewards and free Oroberyl breakdown
Every player will receive update compensation through in-game mail. The rewards remain claimable for 30 days after distribution.
| Reward | Amount |
|---|---|
| Oroberyls | 400 |
| Emergency Sanity Boosters | 2 |
While 400 Oroberyls alone may not seem groundbreaking, the real highlight comes from the new endgame mode, which significantly increases the total free currency available in this patch cycle.
When combining compensation and endgame rewards, players can earn over 3,000 Oroberyls in total.
Performance optimizations and bug fixes
This patch focuses heavily on stability and system correction, especially for mobile players.
An issue affecting specific Android devices caused occasional stuttering when pipes transported liquids. This has now been optimized, improving factory and automation-heavy gameplay segments.
A combat bug involving the six-star operator Laevatain during her ultimate ability has been fixed. Previously, switching her to a non-controlled state mid-ultimate and casting her battle skill could cause abnormal combat behavior. That interaction has now been resolved.

Additionally, issues affecting the Protocol Automation Core and Xiranite Relay, which could incorrectly switch to an unpowered state, have been corrected.
Controller-related freezes during gear outfitting and redundant options inside the control nexus have also been addressed, improving accessibility and input consistency.
Dialogue filter categories that previously displayed incorrect participants have been fixed as well, refining UI clarity.
| Fix Category | Impact |
|---|---|
| Android Performance | Reduced stutter during liquid transport |
| Operator Skill Bug | Stabilized Loveventane ultimate behavior |
| Automation Core Issue | Prevented incorrect power state |
| Controller Freeze | Improved gear customization reliability |
| UI Dialogue Filters | Corrected category display |
Boss balance adjustment: Bone Crusher Vanguard
One of the most important gameplay changes is the nerf to the Bone Crusher Vanguard boss.
Its interruption resistance and knockback distance have been reduced, making it significantly easier to control using physical status effects and pull mechanics. Previously, many players struggled to manage its momentum and resistance windows.

This adjustment improves tactical flexibility and makes status-based compositions more viable.
| Boss Adjustment | Result |
|---|---|
| Lower Interruption Resistance | Easier crowd control |
| Reduced Knockback Distance | Improved positioning strategies |
This change may subtly shift the meta toward teams that specialize in displacement and physical control effects.
New endgame mode: Umbral Monument
The headline feature of the patch is the introduction of Umbral Monument, a high-difficulty mode designed for optimized teams.

Umbral Monument is a time-limited challenge mode where players defeat enemies under strict time constraints. Unlike many gacha endgame modes that require multiple fully built teams, this mode only requires one strong team to complete.
This design lowers the entry barrier while still demanding mechanical execution and efficient builds.
Players can earn up to 2,400 Oroberyls from this mode alone.
| Mode Feature | Details |
|---|---|
| Difficulty | High |
| Team Requirement | Single optimized team |
| Reward Cap | 2,400 Oroberyls |
| Special Section | Monumental Etching (limited refresh mode) |
The inclusion of Monumental Etching, a limited-time refreshing section within Umbral Monument, ensures ongoing replayability rather than one-time clears.

Total Oroberyl potential this patch
When combining all confirmed sources in this update cycle, the Oroberyl value becomes substantial.
| Source | Oroberyl Amount |
|---|---|
| Update Compensation | 400 |
| Umbral Monument Mode | 2,400 |
| Additional Event/Progression Earnings | Approximate remainder pushing total above 3,000+ |
For players saving for banners or future operators, this patch is financially significant within the game’s economy.
Quality-of-life improvements that matter long-term
Although flashy rewards often dominate attention, the performance and system optimizations may have longer-lasting impact.
Android optimization improves smoothness in automation-heavy bases. Controller fixes enhance accessibility. Automation core stability prevents frustrating interruptions in factory setups.
These adjustments collectively elevate gameplay consistency.

Before this patch, Arknights: Endfield leaned more heavily toward progression and infrastructure building. With Umbral Monument, the game now delivers a structured high-difficulty challenge that rewards efficiency rather than roster size.
Requiring only one optimized team lowers the burden on newer endgame players while still rewarding skill.
The boss nerf and system fixes further stabilize the experience heading into this competitive phase.
A pivotal patch for Arknights: Endfield
This update for Arknights: Endfield delivers more than just maintenance. It introduces over 3,000 Oroberyls in total value, launches the challenging Umbral Monument endgame mode, reduces frustration through meaningful bug fixes, and rebalances a difficult boss encounter.
If you log in after maintenance, you’ll not only see smoother gameplay and improved stability, but also a new mode that directly rewards optimized builds.
For both free-to-play players and endgame grinders, this patch marks a meaningful shift toward structured high-difficulty content backed by generous currency rewards.