No missable achievements (plus 42 unknown)
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Completed "PROLOGUE: AWAKENING" mission.
Captured an outpost or guard post.
Completed "PHANTOM LIMBS" mission.
Fulton extracted an enemy soldier.
Completed a SIDE OP.
Increased Mother Base staff to 50 or more personnel.
Interrogated an enemy soldier.
Completed "WHERE DO THE BEES SLEEP?" mission.
Developed 50 or more development items.
Extracted a female prisoner.
Increased Mother Base staff to 250 or more personnel.
Completed "HELLBOUND" mission.
Made D-Dog available for deployment.
Made Quiet available for deployment.
Completed "TRAITORS' CARAVAN" mission.
Earned a total of 10,000,000 GMP or more.
Completed "VOICES" mission.
Developed 100 or more development items.
Completed "METALLIC ARCHAEA" mission.
Completed "SAHELANTHROPUS" mission.
Raised bond with Quiet to the maximum.
Raised bond with D-Dog to the maximum.
Played an "Infiltration" FOB mission.
Raised bond with D-Horse to the maximum.
Completed "TRUTH: THE MAN WHO SOLD THE WORLD" mission.
Completed "A QUIET EXIT" mission.
Completed a mission using a Combat Unit staff member.
Obtained the codename "Hero."
Raised all Teams/Units to level 50.
Constructed all available platforms for Mother Base.
Developed 300 or more development items.
Obtained all memento photos.
Completed all missions.
Completed all "Mine Clearing" SIDE OPS.
Completed all key Dispatch Missions.
Completed all SIDE OPS.
Developed a nuclear weapon.
Disposed of a nuclear weapon.
Completed all missions with an S rank.
Completed all mission tasks.
Extracted all wild animal species.
Obtained all blueprints and key items.