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