Arknights Endfield 1.3: Everything You Need to Know About Sketches of Lost Heirlooms, New Characters, Story, Contingency Contract, and Gameplay Improvements

Arknights Endfield 1.3 is one of the game's most significant updates since launch, delivering a compelling mix of story expansion, new playable Operators, fresh exploration content, challenging endgame activities, and long-awaited quality-of-life improvements. Officially titled Sketches of Lost Heirlooms, Version 1.3 continues the adventure across Talos-II while introducing emotionally driven character stories that deepen the world of Arknights: Endfield.

The update is more than just another content patch. It expands the game's lore, introduces strategic combat options through two powerful six-star Operators, opens an entirely new region to explore, and finally brings the legendary Contingency Contract mode into Endfield. Whether you're a veteran Endministrator or a new player preparing to build your strongest squad, Arknights Endfield 1.3 offers plenty of reasons to jump back into the game.

Arknights Endfield 1.3 Release Date

GRYPHLINE officially released Arknights Endfield 1.3 on June 5, 2026, following a scheduled maintenance period across all supported platforms.

Before the update became available, servers underwent several hours of maintenance to prepare for the new content rollout. Once maintenance concluded, players could download the latest version and immediately access the new story chapters, playable Operators, events, exploration zones, and gameplay improvements.

Like previous major updates, Version 1.3 launched simultaneously for PC, PlayStation 5, and mobile platforms, allowing the global community to begin exploring the new content together.

Sketches of Lost Heirlooms Expands the World of Talos-II

The centerpiece of Arknights Endfield 1.3 is its new storyline, Sketches of Lost Heirlooms.

Following the aftermath of earlier conflicts, peace in Wuling is interrupted when an unexpected disappearance threatens the region's stability. A mysterious message tied to events from the past forces the Endministrator to investigate alongside several trusted allies.

Instead of focusing on large-scale warfare, the new chapter tells a more personal story centered on loyalty, forgotten history, and unresolved relationships.

This smaller narrative scope allows individual characters to receive significantly more development while expanding the overall lore surrounding Talos-II.

Mi Fu Takes Center Stage

The undisputed star of Arknights Endfield 1.3 is Mi Fu, one of the update's two new six-star Operators.

Mi Fu serves as Captain of the Wuling Watch and has appeared throughout previous story chapters, but Version 1.3 finally explores her past in depth.

Her journey reveals long-hidden connections to Quigbo Stockade, her complicated relationship with former allies, and the origins of her unwavering loyalty toward Wuling and Viceroy Fangyi.

Rather than portraying Mi Fu as an invincible warrior, the story emphasizes her internal struggles, regrets, and determination to protect the people she cares about.

This emotional focus makes her one of the most memorable characters introduced since the game's launch.

Mi Fu's Combat Style

In battle, Mi Fu is a 6-Star Physical Guard specializing in close-range offense.

She combines powerful greatsword strikes with rapid gauntlet attacks, creating an aggressive fighting style built around continuous combos.

Her gameplay revolves around chaining together:

• Basic attacks

• Battle Skills

• Ultimate abilities

• Multi-stage attack sequences

Players who carefully manage her skill timing can unleash devastating bursts of physical damage while maintaining constant pressure against enemies.

Unlike simpler melee Operators, Mi Fu rewards patience and precise execution, making her particularly satisfying for players who enjoy mastering advanced combat mechanics.

Camille Arrives Later in Version 1.3

Joining Mi Fu is another six-star Operator, Camille.

Unlike Mi Fu's straightforward frontline role, Camille functions as a Heat Vanguard specializing in battlefield support and combo generation.

His personal story, Danse Macabre, follows an investigation involving suspicious criminal activity and mysterious biological evidence connected to Seš'qa.

Gameplay-wise, Camille focuses on enabling teammates by accelerating skill rotations and creating additional combo opportunities.

This supportive role makes him a valuable addition to teams built around continuous ability usage rather than raw burst damage.

Sword Vault Dale Introduces a New Exploration Region

Exploration also receives a major expansion through Sword Vault Dale.

This newly discovered region features abandoned structures, floating cliffs, forgotten technology, and environmental mysteries waiting to be uncovered.

Unlike previous areas dominated by industrial facilities, Sword Vault Dale combines ancient ruins with advanced Terran technology, creating one of the game's most visually distinctive locations.

Players gradually uncover the truth behind the region while following the Wuling Watch's investigation into the legendary Lost Heirlooms.

Exploration rewards include hidden collectibles, combat encounters, environmental puzzles, and additional narrative discoveries that enrich the world beyond the main questline.

Contingency Contract Finally Arrives

Perhaps the biggest gameplay addition in Arknights Endfield 1.3 is the arrival of Contingency Contract.

Veterans of the original Arknights immediately recognize this mode as one of the franchise's toughest endgame challenges.

Rather than relying solely on stronger enemies, Contingency Contract allows players to customize battlefield difficulty through a variety of selectable modifiers.

Examples include:

• Increased enemy health

• Stronger enemy attacks

• Reduced player healing

• Limited deployment options

• Environmental hazards

Each modifier increases overall challenge while rewarding players for successfully adapting their strategies.

The result is an endgame mode that emphasizes tactical planning instead of simple character strength.

Team Building Becomes More Important Than Ever

Because of Contingency Contract, Arknights Endfield 1.3 places greater emphasis on roster flexibility.

Players who previously relied on one universal team must now consider multiple squad compositions capable of handling different battlefield conditions.

Strong team building involves balancing:

• Damage dealers

• Defensive Operators

• Crowd control

• Healing support

• Mobility

• Skill synergy

Experimentation becomes essential as different contracts encourage completely different tactical approaches.

New Narrative Events

Version 1.3 introduces several major story events beyond the main campaign.

Highlights include:

• A Fistful of Reflections

• Danse Macabre

• Umbral Moment

• Contention of Deathly Silences

• Monumental Etching: Dirge of Grief

Each event expands the game's lore while offering unique rewards, additional dialogue, and exclusive combat scenarios.

Together, they provide dozens of hours of additional gameplay for players interested in the world of Talos-II.

Factory Management Receives Major Improvements

Outside combat, Arknights Endfield 1.3 significantly improves industrial management.

Factory optimization has been streamlined through several new systems.

Key additions include:

• Backup Power

• Automated recipe handling

• Improved production management

• Reduced factory interruptions

These changes reduce unnecessary micromanagement while allowing players to focus more on exploration and combat.

The result is a smoother progression experience without removing the strategic planning involved in factory development.

Inventory Management Becomes Faster

Another highly requested improvement arrives through expanded inventory management options.

Players can now enjoy:

• Bulk Artificing

• Weapon Batch Dismantling

• Better Lock Management

• Improved farming indicators

• Perfect Match recommendations

Previously repetitive inventory tasks now require significantly fewer menu interactions.

These changes may appear small individually, but together they greatly improve the overall user experience.

Better User Interface and Daily Progression

Version 1.3 also introduces several interface improvements.

Among the most useful additions are:

• Improved off-screen enemy warnings

• Faster controller switching

• Seamless keyboard transitions

• Redesigned Daily Tasks

• Cleaner progression tracking

These refinements help reduce friction during everyday gameplay while making important information easier to understand.

New Enemy Types Refresh Combat

Combat also benefits from several new enemy designs introduced throughout Sword Vault Dale.

Players encounter both:

• Large elite enemies

• Fast-moving swarms

Each enemy type encourages different tactical responses, preventing encounters from becoming repetitive.

Combined with the new Operators and Contingency Contract modifiers, Version 1.3 delivers noticeably greater combat variety than previous updates.

Why Mi Fu Is Already Popular

Among all additions in Arknights Endfield 1.3, Mi Fu has quickly become the community favorite.

Players praise her for several reasons:

• Excellent character writing

• Emotional story

• Stylish animations

• High physical damage

• Satisfying combo gameplay

Her ability to fit into numerous team compositions also increases her long-term value beyond the current update.

Many players consider her one of the strongest Physical Guards currently available.

Should You Pull in Version 1.3?

For most players, Arknights Endfield 1.3 offers excellent banner value.

Mi Fu provides exceptional frontline damage and meaningful story significance, while Camille introduces valuable support mechanics that enhance many existing team compositions.

Players interested in endgame content, particularly Contingency Contract, will likely benefit from expanding their roster during this update.

Final Thoughts

Arknights Endfield 1.3 successfully builds upon the game's foundation by combining meaningful narrative development with substantial gameplay improvements. The introduction of Mi Fu and Camille, the new Sword Vault Dale region, and the arrival of Contingency Contract provide fresh experiences for both casual players and endgame enthusiasts.

Beyond new content, Version 1.3 also addresses many long-standing quality-of-life requests through improved factory management, streamlined inventory systems, interface refinements, and progression enhancements. These updates make everyday gameplay smoother while preserving the strategic depth that defines Arknights: Endfield.

For players looking to experience one of the game's strongest updates so far, Arknights Endfield 1.3: Sketches of Lost Heirlooms delivers an excellent combination of heartfelt storytelling, challenging combat, rewarding exploration, and meaningful long-term progression.