This guide will help you earn an S Rank in the Extraordinary story mission in Metal Gear Solid 5: The Phantom Pain, and includes a list of the mandatory and optional objectives available for this mission. Keep in mind that it is not necessary to complete all the objectives to earn an S Rank. All you need is an accumulated score of 130,000 or more, and earning the time bonus as well as some score multipliers will greatly increase your chances of achieving an S Rank for the mission.
- Secure the film canister (Mandatory).
- Capture Spugmay Keep (Optional).
- Secure the film canister before reinforcements arrive (Optional).
- Extract the prisoner held at Spugmay Keep, East Guard Post (Optional).
- Extract a griffon vulture near Spugmay Keep (Optional).
Before you start, choose a drop time of 1800 to have the advantage of darkness during your stealth maneuvering later on. Begin this mission by selecting the landing zone further north, closest to Spugmay Keep.
The film canister you are looking for will be in one of three locations. The first film canister we found happened to be the correct one, but it may be different for your playthrough, so we will tell you how to find all three canisters just in case.
Mount D-Horse and start riding toward the Keep indicated by the objective waypoint on your map. Head up the hill leading to the Keep, and be careful not to get spotted by the enemy guards positioned at the top. Lay prone as you make your way up the hill, and move to the right to locate the first film canister inside a clay pot on the ground. You can equip your night vision goggles to locate the canister if necessary.
Move to the right toward some ruined archways, making sure to neutralize the enemy guards with your tranquilizer pistol if necessary. Locate a small wedge taken out of the bricks along the left edge of the second archway. This is where another film canister is located.
The final possible location for the film canister is just ahead of the archway. Move forward from the archway toward another small set of ruins, where there will likely be a couple guards patrolling the area. There will be three short pillars surrounded by a broken knee-high wall. The third pillar will have a gaurd standing very close by. Neutralize the guard, and search the outer surface of the third pillar to locate the final film canister.
Once you have secured the correct film canister, head back down the hill to leave the Keep. Call for your D-Horse and ride away down the road until you have cleared the hot zone, concluding the mission.
A quick completion time combined with No Retries, No Kills, and No Enemy Combat Alerts should earn you enough points to score you an S Rank rating.