This guide will help you earn an S Rank for The White Mamba story mission in Metal Gear Solid 5: The Phantom Pain, and includes a list of the mandatory and optional objectives available for this mission. An S Rank requires a score of 130,000 points or more, so completing all of the optional objectives is not necessary. It is best to try and secure the time bonus as this can grant you a significant amount of points, and an S Rank can often be obtained through a substantial time bonus alone.
- Extract the White Mamba (Mandatory).
- Extract the prisoner held at Masa Village (Optional).
- Extract the White Mamba without giving him the opportunity to resist (Optional).
- Secure the Rough Diamonds near Masa Village (Optional).
- Extract 20 child soldiers (Optional).
At the start of the mission, equip your D-Horse and begin riding to the left, avoiding a small outpost to the right. The goal is to simply extract the target and leave, in order to complete the mission as quickly as possible. If you want to experience the full boss fight, then we suggest you do so first, and then come back to attempt the S Rank on a separate play through.
Continue riding toward the objective waypoint, approaching from the back cliff side overlooking the village area. Drop down the rocky cliff side to make your way toward the water, and locate a ship near the shore. This is where you will find and extract the White Mamba.
Try not to let the White Mamba spot you first as you approach the ship. Climb the ladder on the side of the ship leading up to the main level, and ascend the staircase in front of you. Carefully sneak up behind the White Mamba, using a stealth maneuver to silently take him down. If he is not roaming about the upper level, he may be resting on a bench to the right as you go up the stairs, where you can use your tranquilizer pistol to neutralize him instead.
With the White Mamba knocked out, toss him onto your back and carry him off the ship toward the landing zone nearby. The trek to the extraction helicopter is practically a cakewalk, as you should not encounter any enemy resistance along the way.
If you successfully followed our guide and did not alert any enemies throughout, you will have earned extra points for Perfect Stealth, No Kills, and No Traces. Combine these score multipliers with a high time bonus for speedy completion, and you should have earned an S Rank score, as well as finished this mission in record time.