Deep Vault X01 area

X01 · Updated 10 Nov 2026

Verified stepsAwaiting notes

Deep Vault is an area of the X01 black site in MW4 DMZ. It is on the Data Center floor.

Screenshots

MapX01
GridC2
FloorData Center floor

Verified facts

  1. Open the Deep Vault gate with a Legendary Deep Vault keycard. The gate does not use the card up.
  2. Open each numbered room inside with its own numbered card, such as Room 301 with Deep Vault 301.
  3. Find the Argonaut Armor in the Core Room.
  4. Open the DRC locker with the X01 Vault DRC Locker Key. Numbered Deep Vault cards do not open it.
  5. A Hajin DRC key does not open the DRC Weapons Locker.
  6. Expect Blix, a Lieutenant who appears only in the Deep Vault.
  7. Climb out by the side shaft rope and pull the switch at the top gate.

Orders

Keys and items

Sources

  • DMZ Map — X01 guide — Open the Deep Vault gate with a Legendary Deep Vault keycard; Open each numbered room inside with its own numbered card, such as Roo; Find the Argonaut Armor in the Core Room; Open the DRC locker with the X01 Vault DRC Locker Key; Expect Blix, a Lieutenant who appears only in the Deep Vault; Climb out by the side shaft rope and pull the switch at the top gate
  • MetaRadar — X01 Black Site guide — Open the Deep Vault gate with a Legendary Deep Vault keycard; Open each numbered room inside with its own numbered card, such as Roo; Find the Argonaut Armor in the Core Room; Open the DRC locker with the X01 Vault DRC Locker Key; Expect Blix, a Lieutenant who appears only in the Deep Vault; Climb out by the side shaft rope and pull the switch at the top gate
  • DMZ Map — Keys list — A Hajin DRC key does not open the DRC Weapons Locker
  • DMZ Codex — Deep Vault guide — A Hajin DRC key does not open the DRC Weapons Locker; Climb out by the side shaft rope and pull the switch at the top gate