Here is the full list of all 50 Metal Gear Solid: Peace Walker HD achievements worth 1,000 gamerscore.
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.
Reached 50 or more game overs.
Reached 300 or more Fulton recoveries.
Reached at least 100 hold-ups to incapacitate the enemy.
Reached at least 100 kills.
Reached at least 100 stun attacks or sleep-inducing attacks.
Recruited Hideo Kojima.
Captured a mech.
Read Huey's love letter.
Cleared all hunting quests.
Performed a Leap of Faith.
Shot enemy right in the middle of the rear end.
Put on a cardboard box.
Attacked enemy soldiers by blowing up an oil drum or truck (single player only).
Completed Metal Gear ZEKE.
Carried out a mission in OUTER OPS.
Obtained Rank S on a date with Paz.
Obtained Rank S on a date with Kaz.
Defeated Pupa, Chrysalis, Cocoon, Peace Walker.
Defeated all AI weapons.
Cleared every achievement.
Cleared all MAIN OPS and EXTRA OPS missions at Rank S.
Cleared all MAIN OPS missions at Rank S.
Cleared all MAIN OPS missions at Rank A or higher.
Obtained every costume.
Cleared all EXTRA OPS missions at Rank S.
Cleared all EXTRA OPS missions at Rank A or higher.
Reached a total of 20,000 or more Camaraderie.
Played using all of the rules in VERSUS OPS.
Never worry about running out of bullets ever again.
Never worry about being detected ever again.
Read all of Paz's diary.
Customized ZEKE's head parts and foot parts with special AI weapon parts.
Cleared "Capture the Enemy Base 06" in OUTER OPS using only soldiers.
Read all of Strangelove's memoirs.
Collected a soldier using a divine wind.
Listened to radio near ghost.
Assembled all special staff members.
Rolled 100 times or more in a single mission.
Nicely cooked a ration.
Threw a chaff grenade at ZEKE (single player only).
Performed CQC six times in a row.
Cleared all EXTRA OPS missions.
Carried out a trade.
Exchanged items back and forth with another player using Delivery.