Phantom Blade Zero Outpost key unlocks a cell with a blackstone fragment
- The Outpost cell key is found near two corpses in the Outpost.
- Opening the Courtyard cell yields one blackstone fragment.
- Four fragments make a blackstone that boosts attack and guard break by 10%.
Players can open a locked cell in Phantom Blade Zero’s Outpost Courtyard by finding a key along an optional route through the Outpost. The detour rewards thorough exploration with a blackstone fragment, which contributes to a combat upgrade. After unlocking the Outpost, players can find the key by…