Xenoblade Chronicles X: Definitive Edition Guide

Exploring the five continents of 惑星ミラ and building up the survivor city of NLA spans dozens of overlapping systems, from ground O.C.ギア chains and ドール frames to multi-chapter quest arcs and regional probe networks. Having a single companion checklist keeps that scale comfortable so you can roam freely while knowing which milestones unlock key quality-of-life upgrades.

Every completable quest, collectible, build milestone, and conversation across this guide carries a checkbox saved automatically in your browser. Terms default to Japanese with English hover tooltips, and the floating bottom-right toggle swaps all game names between Japanese and English whenever you wish. Story twists and late-game recruits remain tucked behind click-to-reveal spoiler masks until you choose to view them.

Permanent Cutoff Notice View All 35 Missables →

ラオ leaves the playable roster permanently upon starting Chapter 9. Complete all 5 of his

キズナトーク beforehand using the checklist on Missables.

Mira world map — 惑星ミラ Continental Survey Map

Walkthrough & Progression

Story chapters gate your biggest movement and combat upgrades, including party swapping, O.C.ギア, your ドールライセンス exam, and aerial flight. Use these four pages to get settled in NLA, follow a smooth chapter-by-chapter play order, check boss elemental resistances, and stay ahead of time-sensitive choices.

Beginner Tips

Early settings, division setup, field exploration shortcuts, and resource priorities.

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Play Order

Chronological chapter-by-chapter routing from Prologue through post-story endgame.

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Main Story

Spoiler-free steps, boss elemental resistances, and newly unlocked quests per chapter.

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Missables

Pre-Chapter 9 Heart-to-Hearts, mutually exclusive quest branches, and NPC survival choices.

35 Tracked Checks

Missions & Quest Chains

Side missions bring new alien species into NLA, open fresh アームズカンパニー at the shop terminal, and teach your protagonist's strongest Signature Arts. Browse individual missions by chapter unlock or trace long multi-chapter storylines from their opening rumor to their finale.

Affinity Missions

All 58 キズナクエスト for companion recruitment, Signature Arts, and Skell Flight.

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Side Quests

All 194 ノーマルクエスト ordered by unlock chapter with shareable anchors.

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Quest Chains

Multi-chapter arcs including シークレットオーダー, ミーア, and デフィニア殲滅.

7 Multi-Chapter Arcs

Builds, Combat Systems & Exploits

Smart skill synergies, weapon attributes, and デバイス matter far more than character level when facing high-tier オーバード. These five pages turn complex combat math into step-by-step class paths, ready-to-use companion loadouts, Skell recipes, and fast farming loops.

Cross Build

Five-stage インサイドブレイカー progression into Infinite O.C.ギア.

Protagonist Meta Setup

Party Builds

Optimal Arts, Skills, weapons, and endgame setups for all 22 playable companions.

22 Companion Builds

Skell Builds

Frame progression from Lv. 20 through アレス90 and custom Lv. 60 one-shot frames.

Progression & 5 Endgame Frames

Mechanics

O.C.ギア color combos, damage multipliers, appendage hardness, and ドール保険.

System Reference

Exploits

2-minute Class mastery, マテリアルチケット loops, FN Site revenue, and Lv. 60 gear farming.

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Collectibles, FrontierNav & Heart-to-Hearts

Surveying Mira rewards your entire roster with バトルポイント, passive ミラニウム and Credits income, rare crafting ores, and deeper companion affinity. Use these regional trackers to log field crystals, optimize probe chains, hunt all 99 plushies, and clear every city conversation.

Xenoblade Chronicles X: Definitive Edition