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Arknights: Endfield

How to Use Protoprism

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Protoprism is a Progression Material for Arknights: Endfield. Check out how to farm Protoprism, its location, how to use it, and its information, here!

List of Contents

How to Get Protoprism

Reward From Completing Protocol Space: Skill Up

Protoprism is obtained as a reward for completing Protocol Space: Skill Up at Threat Levels 1 or higher. You will need to use your Sanity to enter the rift and get the rewards from it!

Reward From Completing Various Missions

Progressing the story mission, side quests, and other mission type may reward you with Protoprism upon their completion. Make sure to get and complete all the mission to get a chance to obtain Protoprism.

List of All Missions

Obtain Through Exploration

Arknights Endfield - Is Talos-II an Open World
You can find Protoprism as you explore areas in Talos-II and open chests containing them.

Endfield Interactive Map

Obtained as Event Rewards

Arknights Endfield Events Interface

Protoprism may also be obtained as a reward from any of the current events in the game. Note that most events only last for a limited time, so complete them before they're gone!

All Events and Schedule

How to Use Protoprism

Used to Upgrade Character Skills

Operator Skill Upgrade Materials
Endfield - Protoprism Protoprism Endfield - Protohedron Protohedron

Protoprism can be used to increase your Character's Skills alongside other materials!

List of All Characters

Protoprism Effects and Overview

Protoprism Information

Arknights Endfield - ProtoprismProtoprism Rarity 3★
Type Operator Material

A material that upgrades operator Skills.

A special disk set manufactured using Techno-Protocol and advanced data etching processes. Often combined with other devices to improve physiological absorption of enhancement materials.

Arknights: Endfield Related Guides

Arknights Endfield - Items

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Items By Category

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Progression Materials Natural Resources Gatherables
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All Progression Materials

Bloodcap Mycelia ItemBloodcap Mycelia Wulingstone ItemWulingstone False Aggela ItemFalse Aggela
Triphasic Nanoflake ItemTriphasic Nanoflake D96 Steel Sample 4 ItemD96 Steel Sample 4 Cosmagaric ItemCosmagaric
Quadrant Fitting Fluid ItemQuadrant Fitting Fluid Metadiastima Photoemission Tube ItemMetadiastima Photoemission Tube Advanced Cognitive Carrier ItemAdvanced Cognitive Carrier
Mark of Perseverance ItemMark of Perseverance Blighted Jadeleaf Tuber ItemBlighted Jadeleaf Tuber Igneosite Seed ItemIgneosite Seed
Igneosite ItemIgneosite Tachyon Screening Lattice ItemTachyon Screening Lattice Blighted Jadeleaf ItemBlighted Jadeleaf
Bloodcap ItemBloodcap Arms INSP Set ItemArms INSP Set Protoset ItemProtoset
Protohedron ItemProtohedron Pink Bolete ItemPink Bolete Red Bolete ItemRed Bolete
Ruby Bolete ItemRuby Bolete Kalkonyx Seed ItemKalkonyx Seed Kalkodendra Tuber ItemKalkodendra Tuber
Red Bolete Mycelia ItemRed Bolete Mycelia Kalkodendra ItemKalkodendra Elementary Cognitive Carrier ItemElementary Cognitive Carrier
Chrysodendra ItemChrysodendra Heavy Cast Die ItemHeavy Cast Die Pink Bolete Mycelia ItemPink Bolete Mycelia
Umbronyx Seed ItemUmbronyx Seed Umbronyx ItemUmbronyx Auronyx Seed ItemAuronyx Seed
Auronyx ItemAuronyx Vitrodendra ItemVitrodendra Kalkonyx ItemKalkonyx
Arms INSP Kit ItemArms INSP Kit Protodisk ItemProtodisk Advanced Combat Record ItemAdvanced Combat Record
Cast Die ItemCast Die Protoprism ItemProtoprism Arms Inspector ItemArms Inspector
Intermediate Combat Record ItemIntermediate Combat Record Elementary Combat Record ItemElementary Combat Record

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Arknights: Endfield Walkthrough Team
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