There are 50 achievements worth a total of 1000 points
Clear every achievement.
Clear all MAIN OPS missions at Rank S.
Clear all EXTRA OPS missions.
Clear all EXTRA OPS missions at Rank A or hi
Clear all EXTRA OPS missions at Rank S.
Clear all MAIN OPS and EXTRA OPS missions at Rank S.
Reach 300 or more Fulton recoveries.
Reach at least 100 hold-ups.
Reach at least 100 kills.
Reach at least 100 stun attacks.
Obtain every costume.
Assemble all special staff members.
Recruit Hideo Kojima.
Capture a mech.
Read all of Paz's diary.
Read Huey's love letter.
Read all of Strangelove's memoirs.
Clear all hunting quests.
Perform CQC six times in a row.
Perform a Leap of Faith and obtain the Assassin's Straw Box.
Put on a cardboard box.
Attack enemy soldiers by blowing up an oil drum or truck (single player only).
Carry out a mission in OUTER OPS.
Clear "Capture the Enemy Base 06" in OUTER OPS using only soldiers.
Carry out a trade.
Exchange items back and forth with another player using Delivery.
Obtain Rank S on a date with Paz.
Obtain Rank S on a date with Kaz.
Nicely cook a ration.
Play using all of the rules in VERSUS OPS.
Collect a soldier using a divine wind.
Cleared Prologue: An Army Without Borders.
Cleared Chapter 1: A Country Without An Army.
Cleared Chapter 2: The Phantom Hero.
Cleared Chapter 3: A Nation Reborn.
Cleared Chapter 4: The Illusion of Peace.
Cleared Chapter 5: Outer Heaven.
Cleared all MAIN OPS missions at Rank A or higher.
Reached 50 or more game overs.
Rolled 100 times or more in a single mission.
Never worry about running out of bullets ever again.
Never worry about being detected ever again.
Listened to radio near ghost.
Threw a chaff grenade at ZEKE (single player only).
Shot enemy right in the middle of the rear end.
Completed Metal Gear ZEKE.
Customized ZEKE's head parts and foot parts with special AI weapon parts.
Reached a total of 20,000 or more Camaraderie.
Defeated Pupa, Chrysalis, Cocoon, Peace Walker.
Defeated all AI weapons.