Complete each achievement to get the allotted gamerscore. The numbers between the () is the points given for each achievement.
| Achievement | How to unlock |
|---|
| Down in Smoke (10) | Disorient an enemy with a cloud of smoke from a fire extinguisher |
| Sexting (10) | Send Otacon a picture of the marine with no pants |
| I Think You Need a Hug, E (10) | Find Emma Emmerich |
| Don't Taze Me, Bro (10) | Tranquilize 100 enemies |
| Nothing Personal (10) | Break the neck of 30 enemies |
| Rent Money (10) | Beat 30 enemies unconscious |
| Piece of Cake (10) | Complete a VR or Alternative mission |
| Johnny on the Spot (10) | Hear Johnny's bowel noises in two locations |
| Kissing Booth (10) | Kiss a poster in a locker |
| Snake Beater (10) | Get caught by Otacon stimulating yourself |
| Spaghetti Cinema (10) | Meet Revolver |
| Steel Grip (10) | Attain grip level 3 |
| Lights Out (15) | Defeat Olga Gurlukovich |
| Party's Over (15) | Defeat Fatman |
| No-Fly Zone (15) | Destroy the AV-88 Harrier II |
| No Ray, José (15) | Defeat Metal Gear RAY |
| Another Snake Bites the Dust (15) | Defeat Solidus Snake |
| Vampire Slayer (15) | Defeat Vamp |
| Who You Gonna Call? (20) | Take a clear photograph of the ghost image in Hold No. 2 |
| King of the Jungle (80) | Obtain title of MARKHOR |
| No Boss of Mine (30) | Complete Boss Survival |
| Tell Me a Tale (30) | Complete all Snake Tales |
| Great Dane (80) | Collect all dog tags |
| A Cut Above (50) | Beat the Tanker and Plant chapters on any difficulty |
| Virtually Impossible (80) | Complete all VR and Alternative missions |
| Young Gun (10) | Submit Ocelot |
| Pain Relief (10) | Defeat The Pain |
| If It Bleeds, We Can Kill It (10) | Defeat The Fear |
| The End (10) | Defeat The End |
| Houston, We HAD a Problem (10) | Defeat The Fury |
| River of Pain (10) | Defeat The Sorrow |
| Shagadelic (10) | Defeat Shagohod |
| Grounded (10) | Defeat Volgin in a fist fight |
| The Patriot (10) | Defeat The Boss |
| Mama Said (10) | CQC Slam a guard and knock him out |
| Like He Just Doesn't Care (10) | CQC Hold up an enemy |
| Close Shave (10) | CQC Slit an enemy's throat |
| Snake Eyes (10) | See all of the first-person views that are not indicated by the RB button icon |
| Ralph Called (10) | Make Snake throw up |
| Can I Keep It? (10) | Capture any animal alive |
| Snake Eater (10) | Eat a snake of any type |
| A Good Man Is Hard to Find (10) | Achieve a camouflage index of 100% |
| Problem Solved, Series Over (10) | Create the Ocelot Time Paradox |
| Believe It Or Not (20) | Catch a Tsuchinoko (mythical serpent) |
| Fashionista (20) | Find every type of camouflage |
| Only Skin Deep (20) | Find every type of face paint |
| The Early End (20) | Kill The End before the boss battle |
| It Ain't Easy Being Green (80) | Find all 64 Kerotans |
| Like a Boss (50) | Finish the game on any difficulty |
| Peace Walker (30) | Finish game without killing anyone |
| Metal Gear Solid: Peace Walker | - |
| Vic Boss (50) | Clear every achievement. |
| MAIN OPS All Rank S (30) | Clear all MAIN OPS missions at Rank S. |
| EXTRA OPS All Cleared (20) | Clear all EXTRA OPS missions. |
| EXTRA OPS All Rank A (30) | Clear all EXTRA OPS missions at Rank A or higher. |
| EXTRA OPS All Rank S (50) | Clear all EXTRA OPS missions at Rank S. |
| Big Boss (50) | Clear all MAIN OPS and EXTRA OPS missions at Rank S. |
| Fulton Recovery Veteran (10) | Reach 300 or more Fulton recoveries. |
| Hold-Up Artist (10) | Reach at least 100 hold-ups. |
| Lethal Enforcer (10) | Reach at least 100 kills. |
| Stun Specialist (10) | Reach at least 100 stun attacks. |
| Costume Collector (30) | Obtain every costume. |
| Special Staff Recruiter (20) | Assemble all special staff members. |
| Hideo Kojima (10) | Recruit Hideo Kojima. |
| Mech Catcher (10) | Capture a mech. |
| Paz's Thoughts (20) | Read all of Paz's diary. |
| Huey's Thoughts (10) | Read Huey's love letter. |
| Strangelove's Thoughts (10) | Read all of Strangelove's memoirs. |
| Monster Hunter (20) | Clear all hunting quests. |
| CQC Six Shot (20) | Perform CQC six times in a row. |
| Leap of Faith (10) | Perform a Leap of Faith and obtain the Assassin's Straw Box. |
| I feel... safe (10) | Put on a cardboard box. |
| Indirect Attack (10) | Attack enemy soldiers by blowing up an oil drum or truck (single player only). |
| OUTER OPS Sortie (10) | Carry out a mission in OUTER OPS. |
| Elite Forces (30) | Clear "Capture the Enemy Base 06" in OUTER OPS using only soldiers. |
| Trader (10) | Carry out a trade. |
| Deliverer (20) | Exchange items back and forth with another player using Delivery. |
| Paz Mania (20) | Obtain Rank S on a date with Paz. |
| Kaz Mania (20) | Obtain Rank S on a date with Kaz. |
| That looks tasty! (10) | Nicely cook a ration. |
| VERSUS OPS All Rules (10) | Play using all of the rules in VERSUS OPS. |
| Divine Wind (20) | Collect a soldier using a divine wind. |
| Secret Achievements | - |
| An Army Without Borders (10) | Cleared Prologue: An Army Without Borders. |
| A Country Without an Army (10) | Cleared Chapter 1: A Country Without An Army. |
| The Phantom Hero (10) | Cleared Chapter 2: The Phantom Hero. |
| A Nation Reborn (10) | Cleared Chapter 3: A Nation Reborn. |
| The Illusion of Peace (10) | Cleared Chapter 4: The Illusion of Peace. |
| Outer Heaven (10) | Cleared Chapter 5: Outer Heaven. |
| MAIN OPS All Rank A (20) | Cleared all MAIN OPS missions at Rank A or higher. |
| Failed again, did you? (10) | Reached 50 or more game overs. |
| There's nothing else you can do? (10) | Rolled 100 times or more in a single mission. |
| Gives me infinite ammo (30) | Never worry about running out of bullets ever again. |
| Stealth camouflage (30) | Never worry about being detected ever again. |
| Kuwabara, Kuwabara (10) | Listened to radio near ghost. |
| I'm dead serious (10) | Threw a chaff grenade at ZEKE (single player only). |
| You're pretty good (20) | Shot enemy right in the middle of the rear end. |
| Launched ZEKE (20) | Completed Metal Gear ZEKE. |
| Completed ZEKE (50) | Customized ZEKE's head parts and foot parts with special AI weapon parts. |
| Vic Vos (50) | Reached a total of 20,000 or more Camaraderie. |
| Basilisk Eater (30) | Defeated Pupa, Chrysalis, Cocoon, Peace Walker. |
| Steel Eater (50) | Defeated all AI weapons. |
