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Metal Gear Solid V: The Phantom Pain

M27 - Root Cause

Jarrod Garripoli
# Mission Task Mandatory/Optional
1 Extracted Intel Team member. Mandatory
2 Extracted Intel Team member before he could have an accident. Optional
3 Exfiltrated the hot zone with Intel Team member by land. Optional

A member of the Intel Unit has gotten a lead on the epidemic that’s crippling Mother Base, but he was captured in the process, so it’s up to you rescue him. Head straight for the camp as soon as you land, where you’ll find a bunch of enemies waiting for you. It should be said that there is a hidden timer of sorts for this mission, but not because the prisoner will be killed.

If you bring along D-Dog, he will mark the prisoner for you and you will notice that he is escaping. What you don’t see is that he is trying to make it to a truck, but he is in no condition to actually drive it. Not long after taking off, the prisoner will crash the truck, causing a big explosion and alerting the enemies to come take a look.

Catch up to the truck (or wait for it to explode) (left) and then carry the prisoner to the extraction point (right).

This makes it an even more dire situation, as you will need to contend with more enemies than usual, with even more arriving. So, you can either quickly make your way to the prisoner at the initial camp and catch him before he takes off in the truck, or you can go after him once he crashes, opting to not bother with any more enemies than those in the way. Once you grab the prisoner, either call in a chopper or exfiltrate the hot zone via foot to complete the mission.


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Guide Information

  • Publisher
  • Platforms,
    PC, PS3, PS4, XB 360, XB One
  • Genre
    Action Adventure, Stealth
  • Guide Release
    1 October 2015
  • Last Updated
    7 December 2020
  • Guide Author

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Big Boss wakes up from a coma after nine years to find himself in a world that has moved on completely. But war never changes. And old enemies from the past are still searching for him, to put an end to his legacy once and for all. You are the legendary soldier, Big Boss, codenamed "Venom Snake". Fight past demons and confront new ones in Hideo Kojima's swansong for the Metal Gear series. Let us guide you on your journey for Hideo Kojima’s final Metal Gear Game: Metal Gear Solid V: The Phantom Pain.

Version 1.1

  • The ultimate guide to 100% completion: Every mission and side-ops, all secrets and collectibles at your fingertips.
  • Hi-resolution screenshots and videos to S-Rank every single mission.
  • Information on the Mother Base management meta-game.
  • Carefully designed to avoid unnecessary story spoilers.
  • A full trophy/achievement guide.
  • Locations of all of the collectibles, such as Blueprints, Wild Animals and more.
  • A detailed list of every Key Dispatch Mission.
  • An analysis of every single Side Ops.

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