How to efficiently gather promotion materials to level up your operators in Arknights Endfield

Time: 2026-02-07

Arknights: Endfield introduces level caps early in the game that prevent operators from progressing beyond level 20 initially, and later at level 40. Overcoming these caps is essential to maximize your operators’ effectiveness in combat. The primary challenge lies in obtaining specific promotion materials—most notably, the Pink Bolete and Red Bolete—which are required to promote operators to higher ranks.

Pink Bolete: Essential for E1 Promotion
Pink Boletes are required to promote each operator to E1, with three units needed per character. These can be obtained through multiple sources, both in the field and via cultivation:

• Rare Gathering Sites: The Hub, Valley Pass, and Originium Science Park in Valley IV
• Growth Chamber Cultivation: Pink Bolete Mycelia can be cultivated at OMV Dijiang

In The Hub, two Pink Bolete Rare Growth sites are positioned just south of the Old Power Plant, in close proximity to one another. A third site exists in Rockhill Passage, which is accessible only after completing a main mission.

Valley Pass contains a single Pink Bolete Rare Growth, located in the Arsenal southwest of Valley Transfer. Originium Science Park contains two additional Rare Growths: one at the southeast corner of The Depression and another to the north of Cliffside Trail.

Each location respawns Pink Boletes daily, with the spawn rate and maximum number of Boletes influenced by the player’s Exploration Level. Efficient exploration and prioritization of these locations will greatly reduce time spent farming.

Red Bolete: Critical for E2 Promotion
Red Boletes are required to promote each operator to E2, with five units needed per character. These also have multiple acquisition methods:

• Rare Gathering Sites: Origin Lodespring and Power Plateau in Valley IV
• Growth Chamber Cultivation: Red Bolete Mycelia at OMV Dijiang

In Origin Lodespring, three Rare Growths are scattered across the area: one at the southern end of the Logistics Area, one at the eastern end of Blightcliff Observation Post, and a third down a path southwest of Mountain Passage, which requires explosives to access. Power Plateau contains a single Rare Growth in the northern section of the Old Dorms.

Red Boletes also respawn daily, with quantity and rate affected by Exploration Level. Prioritizing routes and tracking respawns can optimize farming efficiency and reduce downtime.

Alternative Options for Faster Progression
For players looking to accelerate their progression, purchasing advanced Arknights: Endfield Accounts is an option. Platforms such as z2u.com offer accounts with higher-level operators and accumulated resources, allowing immediate access to late-game content and operator promotions. This can save significant time and provide a competitive advantage in both PvE and PvP content.

By combining efficient farming strategies with optional account acquisition, players can quickly overcome level caps, ensure their operators reach their full potential, and maintain a strong presence in the game.