Phantom Protocol is a Key Item in Immortal Unchained. Phantom Protocol is required to open certain strongboxes, doors and portals. The Phantom Protocol is located in the strongbox received after defeating Arlen on Veridian after the 3 Nexus have been connected to the Monolith.
Phantom Protocol Location
- In the strongbox received after defeating Arlen on Veridian after the 3 Nexus have been connected to the Monolith.
- Follow the path from the Cinderwoods Gate, through the Temple Ruins, up the Molten Crag, through Beagor, and finnally through the Bilegrove to battle Arlen.
Phantom Protocol Information
- Used to open the portal located outside of Arlen's boss room in the Bilewoods on Veridian to the Grand Hall.
- Used to open the portal located in the Apexion Skypath to the Echo of Arlen in the Nether Crux.
- Used to open a large strongbox near the Lava Fields Obelisk located in the Mamga Crux on Veridian.