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Where to Find the Cell Key in Phantom Blade Zero

The Cell Key opens a locked Outpost cell to grant a Blackstone Fragment that begins the game's item-based backtracking.

Overview

  • IGN and PCGamesN confirmed on Thursday that the Cell Key is inside the Outpost in Weeping Creek Valley and appears as a glowing orange orb next to a corpse.
  • To reach it players must speak to the guards to enter the Outpost, trigger a short cutscene with Forge, go to the Outpost bell, then take the right-hand path at the stair split to find the key.
  • Return to the locked gate outside the Outpost and use the Cell Key to open the cell and claim a Blackstone Fragment.
  • Blackstone Fragments are collectible progression items and every four fragments permanently boost attack and guard-break by 10%, so this early fragment has a lasting gameplay effect.
  • Guides present the Cell Key as a low-friction introduction to Phantom Blade Zero’s Metroidvania-style design and players should sweep Weeping Creek Valley now to avoid extra backtracking later.