# Weapon Tune Protocol 2026 - Stages

> Arknights Endfield Weapon Tune Protocol Space guide. Physical Statuses mechanics, weapon tune material farming, and Physical operator builds.

Source: https://endfieldhub.org/guides/weapon-tune-protocol
Published: 2026-02-09
Updated: 2026-02-09

Weapon Tune Materials Farming - Physical Statuses and DMG Reduction

Last updated: 2026-02-09

Complete guide to Weapon Tune Protocol Space in Arknights: Endfield with 5 stages, Physical Statuses mechanics (bonus damage + vulnerability), DMG Reduction removal through Vulnerable and Physical Statuses, team compositions, and sanity-efficient weapon tune material farming.

## \*TL;DR - Key Points

* \* **Best early materials:** Stage 1-2 - 40-50 Sanity for early game weapon tune materials
* \* **Best material density:** Stage 4-5 - 70-80 Sanity for late game tune materials
* \* **Lv 1-2 Mechanic:** Physical Statuses deal more DMG and inflict temporary DMG debuff
* \* **Lv 3+ Mechanic:** Enemies have DMG Reduction. Vulnerable/Physical Statuses can remove it
* \* **Location:** The Hub - accessible mid-game (Authority Level 25+)
* \* **Primary rewards:** Weapon tune materials

## Contents

## What is Weapon Tune Protocol Space?

Weapon Tune Protocol Space is a **combat challenge mode** located in The Hub that rewards weapon tune materials for weapon tuning. It features unique mechanics centered around Physical Statuses (Vulnerability, Stun, etc.) and enemy DMG Reduction.

### Critical: Physical Operators Mandatory

Stage 3+ features enemies with DMG Reduction that can only be removed through Physical Statuses (Vulnerability most effective). Pure Arts teams will struggle significantly. Bring Physical status-based operators.

## Level 1-2 Mechanic: Physical Statuses Bonus

**Mechanic:** Physical Statuses deal more DMG to enemies and inflict temporary debuff that causes them to suffer more DMG.

### What This Means

* • Physical status effects (Vulnerability, Stun, etc.) deal increased damage
* • Successful Physical Status application increases subsequent damage
* • Vulnerability status makes enemies take more damage from all sources

### How to Exploit

* • Build team with Physical status-inflicting operators
* • Prioritize applying Vulnerability and other Physical Statuses
* • Chain attacks after status application for vulnerability bonus
* • Consider operators with multiple Physical Status options

## Level 3+ Mechanic: DMG Reduction Removal

**Mechanic:** Enemies have DMG Reduction. Vulnerable and/or Physical Statuses can remove enemies' DMG Reduction. Physical Statuses can inflict temporary debuff making enemies take more DMG.

### Critical: DMG Removal Essential

Enemies in Stage 3+ have DMG Reduction that significantly reduces ALL damage. You **must** use Physical Statuses (Vulnerability most effective) to remove this DMG Reduction before effective damage is possible. Arts-only teams fail here.

## Stage-by-Stage Walkthroughs

### Stage 1 (40 Sanity) - Easy-Medium

**Mechanic:** Lv 1-2: Physical Statuses bonus active

Basic enemies with moderate HP. 2-3 waves.

**Strategy:** Build Physical status-focused team. Apply Physical Statuses. Chain attacks for vulnerability bonus.

### Stage 2 (50 Sanity) - Medium

**Mechanic:** Lv 1-2: Physical Statuses bonus active

**When to Move:** When Stage 1 clears are under 2 minutes and status application consistent.

### Stage 3 (60 Sanity) - Medium-Hard

**Mechanic:** Lv 3+: DMG Reduction requires removal via Physical Statuses

High HP enemies with DMG Reduction. 3 waves.

**Strategy:** Physical operators mandatory. Remove DMG Reduction before dealing damage. Vulnerability most effective for DMG Removal.

### Stage 4 (70 Sanity) - Hard

**Mechanic:** Lv 3+: DMG Removal active and stronger

**Recommended:** Operators Level 40+, E1 promoted team

### Stage 5 (80 Sanity) - Very Hard

**Mechanic:** Lv 3+: DMG Removal at maximum

**Recommended:** Operators Level 60+, E2-E3 promoted team

## Team Composition Guide

| Slot | Role              | Recommended                               |
| ---- | ----------------- | ----------------------------------------- |
| 1    | Main DPS          | Physical operators with status effects    |
| 2    | Status Specialist | Vulnerability/Physical status specialists |
| 3    | Support           | Healer or buffer operator                 |
| 4    | Tank/Support      | High DEF/HP or additional Physical        |

### Critical: Physical Mandatory for Stage 3+

The DMG Reduction mechanic demands Physical-based teams. Arts-only teams fail at Stage 3+. Build around operators with high Physical status frequency and Vulnerability application capabilities.

## When to Farm Weapon Tune

| Authority Level | Recommended Stage | Runs Per Day |
| --------------- | ----------------- | ------------ |
| 25-30           | Stage 1           | 2-3          |
| 30-40           | Stage 2           | 2-2          |
| 40-50           | Stage 3-4         | 1-2          |
| 50+             | Stage 4-5         | 1-2          |

## Common Mistakes & How to Avoid Them

### 1\. Not using Physical operators

Problem: Bringing Arts team to Protocol Space with DMG Reduction. **Fix: Physical operators mandatory for Stage 3+. Arts damage ineffective against DMG-Reduced enemies.**

### 2\. Ignoring DMG Reduction

Problem: Attacking without removing DMG Reduction first. **Fix: Use Physical Statuses (Vulnerability) to remove DMG Reduction before dealing damage. Essential for Stage 3+.**

## Quick Reference Checklist

## Frequently Asked Questions

### What are the key mechanics in Weapon Tune Protocol?

Level 1-2: Physical Statuses deal more damage and inflict vulnerability debuff. Level 3+: Enemies have DMG Reduction. Vulnerable and Physical Statuses can remove DMG Reduction.

### Do I need Physical operators for Weapon Tune Protocol?

Absolutely. Stage 3+ features enemies with DMG Reduction that can only be removed through Physical Statuses (Vulnerability most effective). Arts-only teams will struggle significantly at higher stages.

### When should I start farming Weapon Tune Protocol?

Start around Authority Level 25+ with Stage 1-2\. Progress to Stage 3+ when you have Physical status-based operators and reach Authority Level 35+.

### What rewards do Weapon Tune Protocol stages provide?

Stages reward Weapon Tune materials for weapon tuning and enhancement. Higher stages provide better material density and higher-tier materials but require stronger teams.

### How do I remove DMG Reduction in Stage 3+?

Use Physical Statuses (especially Vulnerability) to remove enemies' DMG Reduction. Vulnerability is most effective for DMG Removal and also increases damage after removal.