The First Descendant Season 4 Guide 2026: Hailey, Karel, Colossus

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The First Descendant Season 4, The Great Clash, began on August 20, 2026. It added the Descendant Raven, a Mega Dungeon that ends with Karel, and Transcendent Weapons. Ultimate Hailey and the Cradle of Evolution dungeon followed on September 17, and patch 1.4.6 landed on October 22. Henosis Sanctuary and Monet are planned for November.

What are the key facts about The First Descendant Season 4?

Item Details (October 2026)
Season Season 4: The Great Clash, from August 20, 2026
New Descendants Raven at launch; Ultimate Hailey on September 17
New dungeons Mega Dungeon (ends with Karel); Cradle of Evolution
New gear Transcendent Weapons
Latest patch 1.4.6, October 22, 2026
Coming next Henosis Sanctuary and Monet (November); Colosseum-A (December)

Season 4 is the biggest content drop of the year for The First Descendant. Most of it is aimed at endgame players, but leveling and the story are still the entry point for anyone new.

How do Raven and the Mega Dungeon with Karel work?

Raven arrived as the season's new Descendant. The Mega Dungeon is a long, multi-boss run that ends with Karel. It rewards squads that can keep pace through several fights in a row, so stamina and a steady build matter more than one burst of damage.

  • Bring a build that handles both groups of enemies and single bosses.
  • Agree on roles before you start, such as who handles adds and who focuses the boss.
  • Expect a few practice runs before full clears feel smooth.

What came with Ultimate Hailey and Cradle of Evolution?

Ultimate Hailey and the Cradle of Evolution dungeon arrived on September 17, 2026. The same update added trading for some high-tier weapons. Cradle of Evolution is the newest dungeon and a good test for a Season 4 build.

Ultimate Descendants are built from blueprints and materials that drop from your runs. Drop rates are random, so plan for repeat clears and do not trust anyone offering to sell parts outside the game.

How do Void Intercept tiers and the Extreme difficulty work?

In July 2026 Nexon merged Hard Intercept Battles and Void Abyss Intercept Battles into one mode with clear difficulty tiers, and added an Extreme tier above the old ceiling. You still fight a Colossus in a squad of four.

Tier Who it suits
Normal New players learning the fight
Hard Players with a finished main build
Void Abyss Endgame squads chasing better drops
Extreme Top builds and practiced squads

Learn one Colossus at a time. Each has its own weak points, and hitting them is often the difference between a clean clear and a wipe.

What are Trials and Conquest?

Trials scale enemy difficulty with no fixed end, so you can test how far a build goes. Conquest adds timed hard runs. Both came after the season launch and give endgame players something to push between new releases.

How should you level Descendants, weapons and Arche Tuning?

Each new Descendant and weapon needs to reach level 40, and Arche Tuning is a separate board per Descendant. Leveling several Descendants also raises your Mastery Rank. For a full explanation of these systems, read our beginner guide to The First Descendant.

What is coming next: Monet, Henosis Sanctuary and Colosseum-A?

The roadmap lists the Henosis Sanctuary dungeon and the Descendant Monet for November 2026 and Colosseum-A, a PvEvP mode, for December 2026. Dates on roadmaps can move, so check Nexon's news before you plan around them.

Self-play or piloted: which is better?

Colossus and dungeon carries work as self-play through matchmaking, so you keep your login. Leveling and Arche Tuning are faster piloted, which means sharing a login. We could not load Nexon's full terms, so treat login sharing as against the rules. Read our account safety notice and see the First Descendant services collection.

What does First Descendant Season 4 help cost?

Boosting Games sells fixed-price First Descendant services. Prices below are the starting prices at the time of writing (October 2026), and the exact price for your option shows before checkout. Every service is listed on the The First Descendant services collection.

Service What you get How you play Price Typical time
The First Descendant Void Intercept Colossus Carry We beat the Colossus you pick at your chosen tier, in a squad with you or on your account. Self-play or piloted From $5 Same day–1 day
The First Descendant Season 4 Dungeon Carry We clear the Season 4 Mega Dungeon through Karel, Cradle of Evolution, or Infiltration Operations at the difficulty you pick. Self-play or piloted From $8 Same day–1 day
The First Descendant Arche Tuning Leveling We raise Arche Tuning on the Descendant you pick by playing high-XP content, so you can place more tuning nodes. Piloted From $12 1–3 days
The First Descendant Descendant Leveling We level Descendants you already own to 40 by playing missions and dungeons. Piloted From $7 1–3 days
The First Descendant Coaching Live coaching on builds, modules, farming routes and Colossus mechanics. Coaching From $19 Same day–2 days

Honest risk note: We could not load Nexon's full terms of use; treat sharing your login as against the rules, since Nexon bans cheaters and abusers in waves. Self-play carries keep your login private. Self-play and coaching keep your login with you and carry less risk than piloted orders. Read our account safety notice before you order. We never sell items, materials, amorphous patterns, Descendants, weapons, Caliber, accounts, cheats or macros.

Get help with First Descendant

Pick a service and option, see the exact price before you pay, and follow every session on your private order page.

See First Descendant servicesAsk Boost Up AI

Related reading: What Is The First Descendant? Colossus Fights and How to Win (2026), and our general guide to whether boosting is bannable.

First Descendant FAQ

What is in The First Descendant Season 4?

Season 4: The Great Clash began on August 20, 2026. It added the Descendant Raven, a large Mega Dungeon with several bosses ending with Karel, and Transcendent Weapons. Trials and the Conquest difficulty followed, and Ultimate Hailey arrived on September 17 with the Cradle of Evolution dungeon. Patch 1.4.6 landed on October 22, 2026.

What changed in Void Intercept Battles?

In July 2026 Nexon merged Hard Intercept Battles and Void Abyss Intercept Battles into one mode with clear difficulty tiers. It also added an Extreme tier above the old ceiling. You still fight a Colossus in a four-player squad, and drops stay random. Higher tiers give better rewards but need a stronger build and cleaner play.

Is The First Descendant still active in 2026?

Yes. Nexon released Ultimate Hailey in September and patch 1.4.6 on October 22, 2026. The roadmap lists the Henosis Sanctuary dungeon and the Descendant Monet for November and Colosseum-A, a PvEvP mode, for December. The player base is smaller than at launch, but content is still arriving on a steady schedule.

How do I get Ultimate Hailey?

Ultimate Descendants are crafted from a blueprint and parts that drop from specific missions, dungeons or Colossi, plus materials. Drops are random, so expect several runs. Check the in-game Access Info for each part to see where it drops. We never sell parts or Descendants; we can only run the content with you so the drops land on your account.

Can I play with your team instead of sharing my account?

Yes. Colossus fights and dungeon carries can be done as self-play. You join our squad on your own account and only share your in-game name. Leveling and Arche Tuning are usually piloted, which means sharing a login and carries more risk. Self-play is the option we suggest whenever it fits your goal.

Do you sell items or Caliber?

No. We never sell items, materials, amorphous patterns, Descendants, weapons, Caliber or accounts. We level what you own, carry Colossus fights and clear dungeons. Rewards come from your own runs and stay with you. Prices are fixed and shown before checkout, and you can follow every session on your private order page.

Sources: Game Developer: second anniversary roadmap, KeenGamer: 2026 roadmap, Massively OP: Ultimate Hailey release, Jeu.video: patch 1.4.6 schedule.