Clair Obscur Endless Tower Guide (Patch 1.5.0) – How to Beat the New Divergent Star Bosses

They said you had mastered the Canvas. You defeated Simon, outwitted Clea, and conquered the Endless Tower.

Patch 1.5.0 has one response to that confidence: you haven’t seen anything yet.

Sandfall Interactive’s triumphant “Thank You” update doesn’t just tweak difficulty—it rebuilds the Endless Tower into Clair Obscur’s ultimate endgame gauntlet. Brutally remixed bosses, punishing new mechanics, and marathon-length fights now stand between you and true mastery.

New encounters like Simon, The Divergent Star and Clea Unleashed don’t merely hit harder. They dismantle old strategies, punish every misstep, and demand mechanical perfection. This guide is your roadmap through Clair Obscur’s most unforgiving challenge—breaking down the new bosses, must-have rewards, and advanced build philosophies required to survive the climb.

The New Endless Tower Challenge in Patch 1.5.0

The revamped Endless Tower introduces “Divergent Star” variants—extreme re-imaginings of key story bosses. Community consensus is clear: these are some of the hardest fights in the entire game.

Expect:

Massive health pools
Deceptive, fight-ending mechanics
Encounters that can last nearly an hour

As one player summed it up after facing Simon:

“It’s not even the difficulty—it’s the insane health bar.”

New Bosses Breakdown – Divergent Star Encounters

Boss Name	Core Challenge & Gimmick	Key Rewards
Simon, The Divergent Star	A brutal skill check. His opening “light-speed” attack must be dodged or parried—failure permanently removes a party member. Phase 2 disables your frontline, forcing reserve characters into battle.	Simon Haircut (all characters), Colour of Lumina ×20, Catalysts
Clea Unleashed	A pure execution test. You cannot act or deal damage until every hit of her opening combo is perfectly dodged or parried. She can also permanently swallow a party member at random.	Cleim (Weapon), Clea’s Death (Lumina), Colour of Lumina ×20, Catalysts
Chromatic Lampmaster	A more aggressive, enhanced version of the Chromatic boss, representing the difficulty spike of other Divergent Star encounters.	High-level upgrade materials

These fights mark a fundamental shift from the base game. Raw damage is no longer enough—survivability, precision, and preparation now define success.

Mastering the Meta – Essential Build Strategies

Your old builds will not survive the new Endless Tower. Patch 1.5.0 demands a specialized, boss-focused approach.

1. The Non-Negotiable Upgrade: Lumina Sets

Patch 1.5.0 introduces Lumina Sets, allowing you to save up to 50 ability loadouts per character.

This isn’t a convenience feature—it’s mandatory.

You’ll need:

Defensive sustain sets for Simon
Perfect-parry-focused sets for Clea Unleashed
High-damage burn setups for other encounters

Trying to brute-force the tower with a single build is a fast way to fail.

2. Boss-Specific Tactics & Loadouts

🔥 Simon, The Divergent Star – The War of Attrition

This fight is about survival, not speed.

Essential Luminas & Pictos

Cheater + Clea’s Life – Act twice and heal to full on the second turn, enabling constant damage buffs like Full Strength
Defensive Mode
SOS Healing Tint
Second Chance
Survivor

Crucial Tip:
You must fully level and gear all eight characters. Simon disables your frontline—your reserves decide whether the run lives or dies.

🌊 Clea Unleashed – The Solo Execution Test

Clea Unleashed is unlike anything else in Clair Obscur. The community’s most effective strategy is surprisingly simple:

Fight her solo.

Why Solo Works

Party play triggers her “creatures of the deep” attack
This can permanently remove your main damage dealer and unnecessarily prolong the fight

The Optimal Solo Build

Use a counter-focused character like Verso
Stack:
- Augmented Counter Pictos
- Empowering Parry
- Solo Fighter
- Last Stand Critical

Your goal is simple but brutal: learn her combo, parry everything, and let counter-attacks win the fight.

3. General Build Philosophy After Patch 1.5.0

Balance changes in Patch 1.5.0 quietly reshaped the meta:

Boucharo now correctly grants +50% Critical Chance (not +150%)
Hidden +10% damage bonuses were removed from Luminas like Sweet Kill and First Strike

The message is clear:
👉 Glass-cannon builds are out. Resilient, synergistic setups are in.

The Spoils of Victory – Why the Endless Tower Is Worth It

Conquering the new Endless Tower rewards you with some of the best gear and upgrades in the game:

Exclusive Power
Weapons like Cleim and Luminas like Clea’s Death offer effects unavailable anywhere else.
Max-Level Upgrade Materials
Each boss drops Grandiose Chroma Catalysts and a Perfect Chroma Catalyst—essential for final weapon upgrades.
Cosmetic Bragging Rights
Unlock the Simon Haircut for all characters to showcase your triumph.

Final Verdict – Clair Obscur’s True Endgame Test

The redesigned Endless Tower in Patch 1.5.0 is Clair Obscur’s definitive endgame challenge. It demands mastery of mechanics you may have once ignored, deep roster preparation, and thoughtful use of every system the update introduces.

Approach it like a tactician preparing for a final exam:

Study attack patterns
Build Lumina Sets with purpose
Accept that perseverance—not brute force—is the path to victory

In the Canvas, true mastery is earned, not given.

💬 Have you faced the Divergent Stars yet?

Which boss ended your run—and what strategy finally carried you to victory? Share your hard-earned insights in the comments to help other Maestros survive the climb.