In Arknights: Endfield, “Promotion”functions similarly to “Ascension”in games like Genshin Impact or Wuthering Waves. It elevates your character’s level cap and unlocks additional abilities, thereby facilitating a smooth progression during the early stages of the game. One crucial material required for Promotion is the Red Bolete. Below, you’ll find comprehensive guidance on obtaining Red Bolete in Arknights: Endfield.
Finding Red Bolete in Arknights: Endfield

To acquire Red Bolete, you must first achieve Authority Level 25 and complete the main quest leading to the Down the Hill mission. This mission transitions players from the Originium Science Park to the vibrant Origin Lodespring, where Red Bolete grows naturally.
Accessing Origin Lodespring requires navigating northeast from the Originium Science Park via the Cliffside Trail. However, until you progress through the relevant main quest, you will be unable to enter, underscoring the importance of the level 25 prerequisite.

Upon arriving at the designated area, interact with the icons that depict dome shapes with bunny ears. One of these icons represents Red Bolete, while the other corresponds to Chrysodendra. You can track Red Bolete’s location by selecting the item and accessing its Rare Gathering Sites source.
Once you’ve successfully collected some Red Bolete, you can extract its seeds for cultivation in the Dijiang Production: Growth Chamber. To unlock the Growth Chamber, you will first need to upgrade the Control Nexus. This upgrade quest, named Dijiang Upgrade and Maintenance I, becomes available at level 24.
Utilizing Red Bolete in Arknights: Endfield

In Arknights: Endfield, Red Bolete serves as an essential item for promoting your level 40 Operators. This upgrade increases their level cap from 40 to 60, significantly enhancing their strength and unlocking additional potential. Prior to obtaining Red Bolete, players typically utilize Pink Bolete, which facilitates the promotion of level 20 Operators to level 40.
For Promotion II, you will require the following resources:
- 25 Protodisk
- 5 Red Bolete
- 6, 500 T-Creds
Achieving Promotion II grants access to the Outfitting II upgrade, allowing Operators to equip purple-quality gear. Moreover, this upgrade enhances the character’s skills to level 6, a significant improvement from the prior cap of level 3. This enhancement also necessitates obtaining Chrysodendra, another resource available in Origin Lodespring.
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