Mastering the Clea Boss Fight in Clair Obscur: Expedition 33 ~ HaploGamingChef

Introduction

If you're stuck on the Clea boss fight in the Flying Manor section of Clair Obscur: Expedition 33, you're not alone. It’s one of the more intense battles in the game, but with the right strategy and a bit of planning, you can bring her down in two turns—or even just one if you're fully optimized. This casual guide walks you through how to prepare, which skills to use, and how to make the most of your party’s abilities to defeat Clea quickly and efficiently.

What Makes Clea a Tough Boss?

Clea isn't just a tank; she also deals consistent damage and requires careful coordination to beat without dragging the fight out. Her key weakness is Void damage, so building your plan around that is a smart move.

Key Abilities You Need to Win

There are a few core skills and setups that can turn this boss fight in your favor fast:

Spark: This is how you apply Burn, which boosts your damage over time. It’s a must-use move at the beginning of your strategy.
Swift Stride: Use this to switch your character’s stance to Virtuous, unlocking high-power combos.
Standal: Deals extreme Void damage and is Clea’s major weakness. This ability alone can take off massive chunks of HP.
Gradient Attack: Unlocked by maxing your bond with a certain character and telling them the truth in dialogue. It’s a high-damage finisher you can use if you build up enough AP.
Double Turn Skill: If you have the ability to act twice in one round, this becomes a crucial tool for a two-turn or one-turn takedown.

Buffing for Maximum Damage

To maximize your damage output, especially if you're aiming for a one-turn clear:

Use Shells: Specifically, ones that apply the Powerful status boost. It increases damage by 25%.
Equip the Right Weapon: A weapon with high physical power or one that starts you off in Virtuous stance can make a massive difference.
Add Damage Multipliers: Skills or buffs that raise damage caps or stack additional damage effects help break past the 9,999 cap early in Act 3.
Use Mark and Burn Status: Burn applies damage over time, and Mark enhances damage dealt. Apply both if possible using characters like Monooco and her Aim Shot.

Suggested Rotation for One-Turn Kill

Here’s a tried-and-true turn sequence:

Start with Spark – Apply Burn.
Use Swift Stride – Shift to Virtuous stance.
Activate Standal – Hit Clea’s Void weakness.
Use Gradient Attack – If available, end the fight right here.
Optional: Add Buffs with Pictos and Shells – Make sure you’re stacking your damage boosts before attacking.

You can increase your chances of a one-shot by adding AP using items or skills to ensure you can execute all these moves back-to-back.

Recommended Equipment and Setup

Roulette Weapon: This gives a chance to inflict high random damage, useful in burst strategies.
Glazing Weapon: Strong physical damage output, ideal if you're not focused on magic-based Void damage.
Piktos with Attack Buffs: Some Piktos increase damage significantly, especially paired with Powerful status.

Don’t Have Gradient Attack Ready?

No worries—just loop the core sequence:

Spark → Swift Stride → Standal

This loop deals consistent damage, and with Clea's susceptibility to Void, she won’t last long even without your finisher.

Other Helpful Tips

Start in Virtuous: If you have gear that lets you begin the fight already in Virtuous stance, you save a turn.
Auto-Burn Gear: Certain weapons apply Burn automatically, letting you skip Spark and go straight to attacking.
High-Level Weapon Upgrades: Make sure your gear is upgraded for max output—this is what often makes a one-shot possible.
Use AP Add Skills: Add 5 AP with a turn and you can unload all your heavy attacks without waiting.

Final Thoughts

You don’t need to over-optimize to beat Clea in Clair Obscur: Expedition 33, but if you do, you can clear the fight in a single turn with the right setup. Even a casual build can handle her in two rounds if you follow the Burn-Virtuous-Standal approach. Try stacking buffs, using high-damage equipment, and saving AP for one big finish.

Key Takeaways

Burn + Void damage = fastest way to beat Clea
Stack AP and damage buffs early
Use Swift Stride to switch to Virtuous stance fast
Standal and Gradient Attack are game-changers
One-turn kill is possible with the right combo of gear, buffs, and luck

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