Updated January 22, 2026
Added 70+ mineral bed locations in Arknights Endfield. Complete guide to Originium, Ferrium, Aegisalt, and rare ore farming spots. Updated for release January 2026.
If you want to upgrade fast, you'll be spending a lot of time at farming spots for operator and weapon upgrade materials in Arknights Endfield. Every operator and their skills (as well as their weapon) in Endfield need to be leveled up using a combination of basic materials and unique materials.
All Arknights Endfield Upgrade Materials Map Locations List
Basic Arknights Endfield upgrade materials are always needed in abundance, but what you find by exploring the world and through questing will, of course, never be enough. Thanks to our list of all material locations below, you can stock up on specific items and branch out to your favorite teams. Besides farming, it's always a good idea to redeem the latest Arknights Endfield codes.
| Material | Location |
|---|---|
| Combat Records | Valley Pass Sub-PAC (Difficulty 4 recommended) |
| Cognitive Carriers | Valley Pass Sub-PAC (Difficulty 4 recommended) |
| Protodisk | Near the Core AIC Area |
| Protoset | Near the Core AIC Area |
| Arms Items | General weapon EXP farming spots (various locations) |
| Cast Die | Near the Originium Byproduct Processing Center |
| Protoprism | Near the Core AIC Area |
| Protohedron | Near the Core AIC Area |
| D96 Steel Sample 4 | Mines Cable Car Station, Originium Lodespring |
| Metadiastima Photoemission Tube | Power Plateau, Valley IV (Plateau Trunkway) |
| Quadrant Fitting Formation | Tianshi Bureau Academy, Wuling City (top of building) |
| Tachyon Screening Lattice | Jingyu Valley, near Sky King Flats Sub-PAC |
| Triphasic Nanoflake | Bureau of Swordmancers, Wuling City (ground level) |
Operator Leveling Experience Materials Farming Location
There are really only two different types of Experience upgrade items: the Combat Records and the Cognitive Carriers. The former lets you level up your operators from 1 to 60, while the latter is used for level 60 promotions and beyond.
The rarity of these cards only dictates how much EXP your operator eats at a time. And because everyone knows farming these manually is tedious, your OMV Dijiang also features the Manufacturing Cabin, where your operators can make them for you over time.
Slow but sustainable; if you're not actively raising someone from scratch, these will pile up nicely in your MFG Cabin. If you have operators at all stages of raising and need both varieties for many ops, difficulty 4 at this spot in the Valley Pass Sub-PAC offers the most abundant mixture.
Best Farming Location for Operator Promotion Material
Protodisks are needed in certain quantities to promote your operators beyond the 20-level bracket, and then again every 20 levels. After your second promotion tier, the operators will be using the higher rarity of this item, Protoset. Both can be farmed at this spot near the Core AIC Area, with different difficulties offering various mixes of these two items.
Weapon Leveling Experience Materials Location
Unlike the leveling of operators in different promotion brackets, Weapon Leveling Experience Materials are found easily. All three rarities of Arms items will yield EXP for your Arknights Endfield weapons at any stage, provided that they're tuned and there's room for growth.
Weapon Tuning Material Farming Location
The Cast Die items Arknights Endfield upgrade materials come in two varieties and will let you unlock every other 20-level bracket for leveling your weapons. You can find the farming spot that features both near the Originium Byproduct Processing Center.
Skill Leveling Material Farming in Endfield
Protoprism and Protohedron are the two items that will allow you to level up the skills of your operators, and both can be farmed at the spot very near the Core AIC Area. A combination of these two will carry a skill from level 1 to 9, but beyond that is a whole separate issue of Skill Masteries, which utilizes a different special item.
Special High Tier Operator Leveling Materials Map Location
The special tier, or gold tier materials are not only used to bring your operators beyond level 80, but also for high-leveling of weapons and skill mastery. A total of 5 types of these materials exist in Endfield, and while we may only have access to those 5 on release, we are certain more types will be added as the roster of operators expands.
All are acquired through Deep Dives, high difficulty challenges that advise teams of level 80+ operators for the undertaking. Each spot provides the main material it's for as a fixed drop, but there is also a chance to obtain a random drop of two other select high-tier items. Presumably, this is to make it easier to access a certain material in case their fixed drop spot is stonewalling you. The five high-tier materials are as follows:
D96 Steel Sample 4 Farming Location
The D96 cubes can be farmed in a spot next to the Mines Cable Car Station, accessed from ground level.
Related:
Metadiastima Photoemission Tube Farming Location
Metadiastima Photoemission Tubes are found on the Power Plateau, but don't get fooled by the Bonekrusher Warcamp teleport point, as it's actually one level below. Make sure you approach from the Plateau Trunkway instead.
Quadrant Fitting Formation Farming Location
Quadrant Fitting Formation material can be found atop a building at the Tianshi Bureau Academy in Wuling City. The stairs to the highest level are on the south side of the building.
Tachyon Screening Lattice Farming Location
You can top up on Tachyon Screening Lattices in the Jingyu Valley, near the Sky King Flats Sub-PAC.
Triphasic Nanoflake Farming Location
Triphasic Nanoflakes are easily accessed in the Bureau of Swordmancers in Wuling City, on ground level.
Arknights Endfield Materials Farming Guide FAQ
A: Triphasic Nanoflake can be found in Wuling City, in the south entryway to the Bureau of Swordmancers.
A: Tachyon Screening Lattice farming location is found in the Wuling's Jingyu Valley, north-west of the Sub-PAC.
A: Quadrant Fitting Formation can be found on top of a building in the Tianshi Academy Bureau, following a few flights of stairs around the building.
A: Metadiastima Photoemission Tube is found in Valley IV, on the Power Plateau, in the western part of the Plateau Trunkway
A: D96 Steel Sample 4 is available at the Mines Cable Car Station in the Originium Lodespring.
Those are all the materials you'll be farming to level your operators and their weapons to their fullest potential. For other needed materials that you have to move around the world and collect instead, check out our Rare Growths and Ores Locations, and make sure to follow Pro Game Guides to stay in the loop with the freshest Arknights Endfield news.
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