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Arknights: Endfield

Late Game Factory Layout and Best Items Guide (Valley IV)

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The late-game factory gameplay in Valley IV focuses on gearing up for the final parts of Arknight Endfield's Chapter 1. See the best production lines to set up in the late-game, some factory layouts to use, and a general late-game guide in this article!

Valley-IV Factory Progression Guides
Early Game Mid Game Late Game
Wuling Factory Progression Guides
Starter Factory

List of Contents

Best Items to Create

Sandleaf Powder Is The Most Important Item

Input Time Product
Sandleaf Sandleaf x1
(30/min) 		→
(2s)		 Sandleaf Powder Sandleaf Powder x3
(90/min)

For the late-game section of Valley IV, you will encounter the Sandleaf, which, when processed into Sandleaf Powder, is the most important item at this point in the game.

This is because everything you will be crafting in the late-game will use Sandleaf Powder. As such, securing a consistent supply of Sandleaf Powder is a must.

Sandleaf Can Be Found in Power Plateau

Arknights Endfield Sandleaf Locations.png
You can first find Sandleaf in the Plateau Trunkway, located in the Power Plateau. You will gain access to this location upon reaching Authority Level 34 and starting the quest Entering the Endgame.

Prioritize Cryston Components, Buck Capsules, and Batteries

Input Time Product
Packed Origocrust Packed Origocrust x10
(60/min)
Cryston Fiber Cryston Fiber x10
(60/min) 		→
(10s)		 Cryston Component Cryston Component x1
(6/min)
Ferrium Part Ferrium Part x10
(60/min)
Originium Powder Originium Powder x15
(90/min) 		→
(10s)		 SC Valley Battery SC Valley Battery x1
(6/min)
Steel Bottle Steel Bottle x10
(60/min)
Ground Buckflower Powder Ground Buckflower Powder x10
(60/min) 		→
(10s)		 Buck Capsule A Buck Capsule A x1
(6/min)

Once you have secured Sandleaf Powder production, prioritize crafting Cryston Components, Buck Capsule A, and SC Valley Batteries.

Cryston Components are used to craft Level 50 Purple Rarity Gear, while the SC Valley Battery is a direct upgrade of the LC Valley Battery when used in Thermal Banks. Finally, the Buck Capsule A is an even stronger healing item, and is used as an Outpost trade good alongside the SC Valley Battery.

Production Lines Can Be Split Into Smaller Parts

Because of the complexity of the recipes (up to five steps with numerous input and output streams), we highly recommend splitting the production into smaller parts. This makes it easier to manage, and allows you to build the production line over numerous AICs, which can help if you need space.

Splitting the production line requires extensive use of Protocol Stashes and the Depot Buses, so make sure that you have them unlocked.

Final Tier of Equipment Before Chapter 2

The mid-game spans from the end of the early game at around Authority Level 18 until you are able to grind Cryston at Authority Level 34. Be sure to evolve together with your factory to get stronger items and gear!

Valley-IV Factory Layout Guides
◀ Mid Game Wuling Starter Factory ▶

Best Late Game Layouts

Sandleaf Powder

Sandleaf Powder

When producing Sandleaf Powder, remember to use all three output ports in the Shredder Unit to avoid clogging it up. You can then feed all three outputs into a Protocol Stash to send it back to your Depot.

The Automation-Core in particular is perfect for Sandleaf Powder production, as you can have up to nine output streams using a relatively small space. This also frees up your Depot Buses, allowing you to use them for other production lines.

Create Sandleaf Loop Farm

Scalable and Stackable Infinite Seed

Due to the large amount of Sandleaf you will need (hundreds per minute), we highly recommend using an Infinite Loop Farm to get the Sandleaf you need.

The layout shown above, for example, is very compact, and does not need an input from your PAC or from a Depot. Because of this, you can build it in a corner of your AIC, freeing up space for other production lines.

Cryston Components

Cryston Component Production Line
Packed Origocrust - Cryston Component
The first ingredient you need when making Cryston Components are Packed Origocrust. You can make this by refining Originium Ore into Orgocrust, then shredding it into Origocrust Powder. This is then ground with Sandleaf Powder to make Packed Origocrust.
Cryston Fiber - Cryston Component
The second ingredient you need when making Cryston Components are Cryston Fiber. You can make this by refining Amethyst Ore into Amethyst Fiber, then shredding it into Amethyst Powder. This is then ground with Sandleaf Powder to make Cryston Fiber.
Cryston Component - Final
The final step is to combine Packed Origocrust and Cryston Fiber into a Cryston Component using the Gearing Unit. Take note that you will need two of each input to ensure that the Gearing Unit does not stall from a lack of materials.

Buck Capsule A

Buck Capsule A Production Line
Ground Buckflower Powder - Buck Capsule A
The first ingredient you need when making the Buck Capsule A is Ground Buckflower Powder. You can make this by shredding Buckflowers, then grinding it with Sandfleaf Powder. Make sure to connect two of the Shredding Unit's outputs with the Grinding Unit.
Steel Bottle - Buck Capsule A
The second ingredient you need are Steel Bottles. To make them, you must first refine Ferrium to make Ferrium, then shred it to make Ferrium Powder. Afterward, feed two Ferrium Powder outputs into a Grinding Unit with Sandleaf Powder.
This will give you Dense Ferrium Powder, which you must then refine into Steel. Do this twice, and feed both Steels into a Moulding Unit to turn them into Steel Bottles.
Buck Capsule A - Final
To craft Buck Capsule A without any waste or clogging, you must feed two Ground Buckflower Powder inputs and two Steel Bottle inputs into a Filling Unit, resulting in a Buck Capsule A.

SC Valley Battery

SC Valley Battery

The production line for the SC Valley Battery is very similar to that of the LC Valley Battery, with the only difference being that it uses Ferrium Parts instead of Amethyst Parts. Refine Ferrium Ore into Ferrium before passing it through a Fitting Unit to make Ferrium Parts. Meanwhile, you must also shred Originium Ore into Originium Powder.

To prevent waste and clogging, make sure to feed two Ferrium Part inputs and three Originium Powder inputs into a Packaging Unit to make an SC Valley Battery every ten seconds. If you want to maximize your power output, you can output the batteries to up to four Thermal Banks per Packaging Unit.

Late Game Tips

Improve Your Regional Development Level

Regional Development
At this point in the game, you should have access to most, if not all, of the mining areas in Valley IV. To further increase your ore collection rate, you must improve your Regional Development Level. This not only unlock new ore nodes, but it also increases ore node purity, increasing the amount you can get from them.

Regional Development Management Guide

Swap to SC Valley Batteries in Thermal Banks

SC Valley Batteries provide almost double the power that LC Valley Batteries can, so make sure to swap to SC Valley Batteries as soon as you can.

Because of how similar the recipes are, you should have little problem converting your LC Valley Battery production lines to start producing SC Valley Batteries instead.

Thermal Bank Recipes and How to Use

Further Expand Your Factory

Factory Expansion in AIC
Since you should already have access to the AIC Steward found near your PAC and Sub-PAC Hubs, make sure to further expand your factories, namely by unlocking more Depot Buses to help streamline your production lines.

To get the Stock Bills needed to expand your factory, you can either do Outpost Trading, or participate in stock market trading in the Stock Redistribution facility.

How to Farm Stock Bills Fast

Arknights: Endfield Related Guides

AIC Factory Partial Banner

AIC Factory Guide

AIC Progression Guides

Valley IV Progression
Early Game Guide Mid Game Guide Late Game Guide
Wuling Progression
Starter Factory in Wuling

All AIC Factory Guides

AIC Guides
All AIC Buildings Thermal Bank Recipes and How to Use
Best Zipline Locations How to Increase Power Output
How to Increase Power Output All AIC Factory Locations
How to Create and Share Blueprints How to Solve Clogged Facilities
Depot Bus Integration Solution -

List of Facilities by Type

All Facility Types
Resourcing Logistics
Processing Power
Combat Exploration
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