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