Arknights: Endfield 1.3 heads to Sword Vault Dale

Arknights: Endfield Version 1.3 "Sketches of Lost Heirlooms" launches June 5, 2026. Gryphline's official special program confirmed the full picture: a new sub-region called Sword Vault Dale, two new six-star Operators in Mi Fu and Camille, the debut of Contingency Contract mode, and a batch of factory system improvements.

Sword Vault Dale

The new sub-region, Sword Vault Dale, opens up in Version 1.3—an ancient area that resurfaced after Wuling's efforts to clear the Erosion Tide. Players of the original Arknights will find references to Chi Xiao woven through the zone, with Gryphline using the location to build further narrative bridges between Endfield and the base game's lore.

Mi Fu: Physical Guard built around Vulnerability chains

Mi Fu is a 6-star physical guard and patrol captain of the Wuling Watch. Gryphline's program confirmed her as a high-mobility burst fighter capable of chaining up to four basic attacks before moving directly into her Battle Skill sequence. That skill, Qingbo Triplex, runs across three moves: Cloudtrapper pulls nearby enemies in or closes the gap to distant targets; Trail and Mangle applies Crush; and World Splitter delivers a massive single-hit frontal strike.

Her kit turns on vulnerability stack management. Once an enemy reaches three stacks, her combo skill triggers automatically, applying physical susceptibility and resetting her back into Trail and Mangle. Her ultimate, Pile of No Mercy, forcibly lifts a target and slams it for massive physical damage, also feeding back into the same move, keeping the chain going.

Camille: Heat Vanguard and Endfield's first male 6-star

Camille arrives in Phase 2 as a 6-star Heat Vanguard...the game's first male 6-star operator and its first limited Heat Vanguard. A Sarkaz vampire and Blood Hunter from the newly introduced Seš'qa region, his standalone event, Danse Macabre, frames a criminal investigation triggered by an anonymous blood sample, with his hunt leading toward someone who shares his bloodline.

His combat kit centers on Firefang Vesperwings, a summon that deals heat damage and applies heat infliction, weakness, and heat susceptibility across an area. On kill, the Vesperwings automatically migrate to the nearest remaining enemy, sustaining pressure without manual recasting. His combo skill triggers when heat infliction is consumed, delivering a swift dash, additional heat damage, and SP recovery.

Contingency Contract and factory improvements

Contingency Contract makes its Endfield debut in Version 1.3. A high-difficulty endgame challenge format that has been a fixture of the original Arknights since its own early updates. On the quality-of-life side, the update adds bulk equipment forging, bulk weapon dismantling, and lock management to protect pinned gear from accidental removal during bulk operations. Arknights: Endfield's current version 1.2 banner window closes before June 5.

PC performance

On the Lenovo Legion Pro 7i Gen 10 with an Intel Core Ultra 9 275HX and RTX 5080 laptop GPU at 175W TGP, Arknights: Endfield locked to 120fps at Very High with DLSS Quality. The GPU sat between 56% and 88% depending on the scene; the CPU barely broke a sweat at 8% to 19%.