Side Content

Side Content

FINAL FANTASY RESONANCE side content guide — Gilgamesh encounters, the Colosseum, the Chamber of Arms, Ultima Weapon, optional dungeons and 100% completion.

4+
Signature Bosses
60-80h
100% Time
Pre-Launch
Status

Introduction

Beyond the main story, FINAL FANTASY RESONANCE is packed with optional content for completionists. The wandering swordmaster Gilgamesh awaits players who seek him out across the world, offering a legendary multi-stage encounter. A monster Colosseum hosts deadly battles with rewards to match, while the Chamber of Arms seals formidable foes within legendary weapons — a true gauntlet for prepared parties. The ultimate challenge is a showdown with Ultima Weapon, one of the game's most anticipated optional battles. This hub covers all of it: where to find each piece of side content, what you need to prepare, the rewards on offer, and a full roadmap to 100% completion in the 60-80 hour range.

Side Content Overview

ContentTypeDifficultyReward
GilgameshMulti-stage bossHighLegendary encounter
ColosseumBattle arenaScalingBattle rewards
Chamber of ArmsSuperboss gauntletVery HighLegendary weapons
Ultima WeaponUltimate bossExtremeUltimate prize

Optional Content Guide

S

Gilgamesh

The wandering swordmaster — a legendary encounter across the world.

How to FindGilgamesh wanders the world rather than staying in one place. Seek him out across different regions, where he appears for a multi-stage fight that changes as the story progresses.
PreparationBring a balanced party with strong elemental coverage — Gilgamesh cycles through a wide range of attacks and punishes one-dimensional teams.
RewardDefeating him is a rite of passage for completionists and grants unique rewards befitting a legend of his stature.
A

Colosseum

Deadly monster battles with rewards to match.

How It WorksThe Colosseum is a battle arena that pits your party against escalating monster challenges, with the difficulty and rewards climbing as you progress.
PreparationStock up on restorative items and build a durable party — endurance is the name of the game across back-to-back arena fights.
RewardArena rewards include rare items and gil, making the Colosseum a strong repeatable source of endgame resources.
A

Chamber of Arms

Formidable foes sealed within legendary weapons.

How It WorksThe Chamber of Arms is a gauntlet of superbosses, each sealed within a legendary weapon. You face them one by one in a series of intense fights.
PreparationTreat this as endgame content — bring a fully built party with Visions leveled and espers recruited before attempting the gauntlet.
RewardEach victory claims the legendary weapon, adding powerful endgame equipment to your arsenal.
S

Ultima Weapon

The ultimate showdown — one of the game's most anticipated optional battles.

How to FindUltima Weapon appears as the ultimate optional challenge, likely gated behind significant story progress and possibly other side content completion.
PreparationThis is the true test of your endgame build — maxed Visions, recruited espers and a strategy for its devastating attack patterns are essential.
RewardThe prize for defeating Ultima Weapon is the game's ultimate weapon, a fitting reward for the hardest fight in the game.

Core Mechanics

Side content in FINAL FANTASY RESONANCE is structured to test every part of your mastery. Gilgamesh's wandering multi-stage encounter punishes players who rush through the story, rewarding those who return to regions at different points. The Colosseum offers repeatable arena battles with scaling difficulty, making it a reliable source of endgame items and gil for players who enjoy the combat loop. The Chamber of Arms is the completionist gauntlet — a series of superbosses sealed in legendary weapons that demand a fully built party. And Ultima Weapon caps the optional content as the ultimate battle, a final check on your Visions, espers, jobs and strategy. Every piece of side content feeds back into power, so the detours are never wasted.

Advantages

The breadth of side content is a genuine strength for a game positioned as a classic Final Fantasy experience. The roster of optional challenges — Gilgamesh, the Colosseum, the Chamber of Arms and Ultima Weapon — gives completionists clear goals across the full 60-80 hour run and mirrors the iconic optional content of the series' golden era. Because the rewards include legendary weapons and rare items, side content feeds directly back into your power, making the detours feel worthwhile rather than filler. For players who love the combat system, the Colosseum also offers a repeatable arena to test and refine builds.

Challenges

As a pre-release title, the details of the side content are still thin. Exact Gilgamesh encounter locations, Colosseum reward tables, the full Chamber of Arms roster and Ultima Weapon's battle mechanics are based on the official feature list and previews rather than real gameplay. The completion estimate of 60-80 hours for 100% completion is a projection and could shift either way. We will refine these pages with confirmed locations, boss patterns and reward data once the game launches on October 22, 2026.

Frequently Asked Questions

Where do I find Gilgamesh?+
Gilgamesh is a wandering swordmaster who appears across multiple regions of the world rather than staying in one fixed location. The official feature list confirms him as signature side content, and preview coverage describes a multi-stage encounter that evolves as the story progresses. The specific locations and trigger conditions will be documented in detail once real gameplay data confirms them after launch.
Is the Colosseum worth doing?+
Yes, especially for players who enjoy the combat system. The Colosseum offers escalating monster battles with rewards that scale with the difficulty, including rare items and gil. Because it is repeatable, it is a reliable source of endgame resources and a great place to test new Visions, espers and job combinations against a variety of threats.
What is the Chamber of Arms?+
The Chamber of Arms is a gauntlet of formidable foes, each sealed within a legendary weapon. You face them one by one in a series of intense boss fights, and defeating each one claims the legendary weapon that sealed it. It is firmly endgame content — bring a fully built party with leveled Visions and recruited espers, and treat each fight as a serious test of your preparation.
How long does 100% completion take?+
The main story takes roughly 30-40 hours. Pursuing all optional content — Gilgamesh, the Colosseum, the Chamber of Arms, optional dungeons and Ultima Weapon — extends a completionist run to roughly 60-80 hours. That estimate is a projection based on the announced content and the classic Final Fantasy benchmark, and the exact time will depend on your familiarity with the series and how much time you spend in the Colosseum.

Quick Tips

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Attempt Gilgamesh at multiple points in the story — his encounter evolves as you progress, so returning to regions you already visited can reveal new phases of the fight.

💡

Use the Colosseum to farm rare items and gil. Its repeatable scaling battles make it the most reliable endgame resource source for completionists.

💡

Do not attempt the Chamber of Arms or Ultima Weapon until your party is fully built — leveled Visions, recruited espers and a real strategy are the difference between a clean win and a painful wipe.

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