The Cell Key is a unique item in Phantom Blade Zero which, as you may have guessed, unlocks a frustratingly locked door early on in the first map. A short distance into Weeping Creek Valley, just beyond the Outpost Courtyard Bell (the seventh Bell on the map), you’ll find the locked door in question, built into a cave to the left of the Baishan Outpost entrance itself.
After clearing the entrance of enemies, you can inspect the cell door, but Soul won’t be able to open it and reach the treasure inside without the Cell Key. Fortunately, the Cell Key isn’t far away, and in this guide I’ll show you the exact path to take in order to reach it and open up that pesky locked door as soon as possible.
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