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Upgrade weapons by spending Chroma Catalysts or acquiring duplicates in Clair Obscur: Expedition 33. See how to upgrade weapons, which weapons to upgrade, and how to unlock this feature here!
List of Contents
There are two ways you can upgrade your weapons in Clair Obscur: Expedition 33:
| Catalyst | Upgrade Levels |
|---|---|
|
|
Level 1 → Level 3 |
|
|
Level 3 → Level 9 |
|
|
Level 9 → Level 19 |
|
|
Level 19 → Level 32 |
|
|
Level 32 → Level 33 |
Weapons can be upgraded by spending Chroma Catalysts obtained from merchants, as loot, or as drops from enemies and bosses.
Speak to The Curator during Act 1 to upgrade weapons. From Act 2 onwards, weapons can be upgraded by selecting Upgrade Weapons at any Expedition Flag.

Obtaining duplicates of a weapon upgrades its level without using Chroma Catalysts. Duplicates can either be obtained as drops from enemies or bosses, or in New Game Plus.

If you are wondering what weapons you need to upgrade for each character, we recommend upgrading the characters' best weapons per act. This way you will not be wasting the Chroma Catalysts you have gathered!
Best Weapons for Each Character

There are various builds for each character you can work towards in the game. Some weapons are best for certain builds. Know which weapon you should upgrade for your ideal build in our guide below!
Expedition 33 Character Builds

Most weapons come with passive effects that only unlock when you reach certain upgrade levels. These passive effects can turn a good weapon into an even better one, so make sure to take these effects into account.

To unlock Weapon upgrades, you'll need to defeat the Curator as part of the main story once you've progressed through the Flying Waters area.

Once defeated, The Curator will be located at your camp. Head back to your camp and find The Curator in a cave away from the bonfire. Talk to him and choose the option to upgrade your weapon.
How to Unlock and Set Up Camp

| Gameplay Guides | |
|---|---|
| Turn-Based Combat | Parry and Counter Guide |
| How to Set Up Camp | How to Upgrade Weapons |
| How to Save | Weapon Scaling Guide |
| Leveling Guide | Destroy Paint Spikes |
| Respec Attributes and Skill Points | How to Break Enemies |
| How to Flee | Rush Buff Guide |
| Speed Guide | How to Remove the Damage Cap |
| Challenge Modifiers | How to Abandon Battle |
| Antoine Quiz Guides | |
| All Quiz Answers | When Was the Fracture? |
| Settings Guides | |
| List of All Controls | - |
| FAQs | |
| Does Gustave Die? | How to Find A Missing Expeditioner |
| What is Maelle's Age? | - |
How to Upgrade Weapons

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