Missing one tiny item shouldn’t force a full New Game+ run — and thankfully, Patch 1.5.0 finally fixes that. One of the most welcome changes in Clair Obscur: Expedition 33’s massive "Thank You" update is a solution to one of the game’s most frustrating completion blockers: the Old Key.
If you skipped a single interaction during the Prologue festival, you were previously locked out of one journal — and its associated achievement — forever. Patch 1.5.0 puts an end to that pain. This guide shows you exactly where to find the Old Key in the late game, how to use it, and how to finish your journal collection without restarting your entire adventure.
The Old Key in Patch 1.5.0: Your Second Chance
Before Patch 1.5.0, the Old Key could only be obtained during the Prologue festival by giving a Festival Token to Colette. Miss that moment, and one journal — along with the related achievement — was permanently inaccessible in that playthrough.
Patch 1.5.0 fixes this by adding the Old Key to a late-game location, meaning even completionists who missed it early can now recover it during Act III.
📍 How to Find the Old Key in Act III
Follow these steps carefully once you return to Lumière during the final act:
Travel to Lumière during Act III as part of the main story’s finale.
Start from the docks area.
Head up the first set of stairs.
At the top, immediately turn left.
Look for a small cluster of wooden crates or boxes.
The Old Key will be on the ground as a collectible sparkle.
Once collected, the Old Key is added to your inventory and can be used immediately.
Using the Old Key: Unlocking the Fracture Survivor Journal
The Old Key has one specific purpose: unlocking the Fracture Survivor Journal. Here’s where to use it:
Fast Travel to the Left Street Expedition Flag in Old Lumière.
Enter the nearby doorway leading into an open area.
Take the right-hand path and continue forward.
Look for a large broken pipe.
Inside the pipe, you’ll find a locked steel gate.
Interact with the gate and use the Old Key.
Inside, collect the Fracture Survivor Journal.
This journal is required for the "Follow The Trail" achievement, which tracks full journal completion.
Beyond the Old Key: Journal Completion Tips
With the Old Key no longer blocking progress, finishing your collection becomes a matter of thorough exploration.
🔍 Track Your Progress
Open the Journal tab from the main menu to see which entries you’ve collected.
Some journals marked as "Unknown" won’t appear in the list until you physically discover them in the world.
Key Journal Locations to Watch For
Here are a few commonly missed journal locations to keep in mind:
| Journal | Location | Hint |
|---|---|---|
| Journal #60 | Lumière (return visit) | Right of the Opera House entrance, on a stone pier |
| Journal #37 | Gestral Beach | Northeast area, requires the flying ability |
| Julie’s Journal | World Map | On a ledge west of Stone Quarry |
| Verso’s Journal | World Map | On a ledge west of Stone Quarry |
| Simon’s Journal | Renoir’s Drafts | Reward for defeating Simon |
Final Tips for Completionists
Backtracking Is Intended
Patch 1.5.0 is designed around letting players revisit Old Lumière after finding the Old Key. Grab it in Act III, then immediately return to unlock the journal.
Explore Aggressively
Many journals are hidden at the end of side paths, tucked behind environmental obstacles, or placed on world-map ledges that require late-game traversal abilities.
A Major Quality-of-Life Win
This Old Key fix isn’t just a small change — it removes one of the biggest pain points for completionists and respects the time you’ve already invested.
With this update, there’s no longer any need to restart your entire journey for a single missed interaction. Patch 1.5.0 finally allows you to finish what you started and fully document the story of the Expedition.
Did this guide help you finally unlock that elusive achievement? Share your completion tips and any tricky journal locations you found to help fellow Maestros complete their journey.
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