Metal Gear Solid: Peace Walker Cheats For PSP

  1. Monster Hunter Stages

    Read all of Chico's briefing files, then go to Extra Ops 29, move to the beach area and encounter the talking cat. This will unlock the first Monster Hunter stage. Play this to unlock more stages.

  2. Hideo Kojima

    The director Hideo Kojima can be recruited from an interactive cutscene in "Infiltrate the Crater Base" by selecting the truck with the license plate "Centro America 63824 Peace Sentinel".

  3. Hunting Quest Uniforms

    In hunting quests you can get Rathalos, Tigrex and Gear Rex Uniforms. To obtain a S rank you cannot kill a single creature, even the main boss. Just tranquilize it when its health is low.

    Code Effect
    Complete Extra Ops 121 or 122 with S rank Rathalos Uniform
    Complete Extra Ops 123 or 124 with S rank Tigrex Uniform
    Complete Extra Ops 125,126,127 or 128 with S rank Gear Rex Uniform
  4. Unlockable Codenames

    Play through the game under specific circumstances to unlock different codenames.

    Code Effect
    Given to heroes who battle it out to the end using all sorts of weapons and favor cooperation with allies to take down enemies with non-lethal force. FOXHOUND
    Given to heroes who battle it out to the end using all sorts of weapons to take down enemies with non-lethal force. FOX
    Given to heroes who battle it out to the end using all sorts of weapons and cooperating with allies to eliminate enemies with lethal force. DOBERMAN
    Given to heroes who battle it out to the end using all sorts of weapons to eliminate enemies with lethal force. HOUND
    Given to soldiers who mainly use short-range weapons and favor cooperation with allies to take down enemies with non-lethal force. ANT
    Given to soldiers who mainly use short-range weapons and favor taking down enemies with non-lethal force. BUTTERFLY
    Given to soldiers who mainly use short-range weapons and favor cooperation with allies to eliminate enemies with lethal force. BEE
    Given to soldiers who mainly use short-range weapons and favor eliminating enemies with lethal force. SCORPION
    Given to soldiers who mainly use medium-range weapons and favor cooperation with allies to take down enemies with non-lethal force. DEER
    Given to soldiers who mainly use medium-range weapons and favor taking down enemies with non-lethal force. CAT
    Given to soldiers who mainly use medium-range weapons and favor cooperating with allies to eliminate enemies with lethal force. WOLF
    Given to soldiers who mainly use medium-range weapons and favor eliminating enemies with lethal force. PUMA
    Given to soldiers who mainly use long-range weapons and favor cooperation with allies to take down enemies with non-lethal force. GULL
    Given to soldiers who mainly use long-range weapons and favor taking down enemies with non-lethal force. SWALLOW
    Given to soldiers who mainly use long-range weapons and favor cooperating with allies to eliminate enemies with lethal force. RAVEN
    Given to soldiers who mainly use long-range weapons and favor eliminating enemies with lethal force. HAWK
    Given to soldiers who mainly use weapons with explosive power and favor cooperating with allies to take down enemies with non-lethal force. WHALE
    Given to soldiers who mainly use weapons with explosive power and favor taking down enemies with non-lethal force. OCTOPUS
    Given to soldiers who mainly use weapons with explosive power and favor cooperating with allies to eliminate enemies with lethal force. PIRANHA
    Given to soldiers who mainly use weapons with explosive power and favor eliminating enemies with lethal force. ORCA
    Given to soldiers who mainly use CQC and favor cooperation with allies to take down enemies with non-lethal force. KANGAROO
    Given to soldiers who mainly use CQC and favor taking down enemies with non-lethal force. BEAR
    Given to soldiers who mainly use stun rods and favor cooperation with allies to take down enemies with non-lethal force. FIREFLY
    Given to soldiers who mainly use stun rods and favor taking down enemies with non-lethal force. EEL
  5. Insignias

    Complete challenges by progressing through the game to earn Insignias. Each Insignia unlocked rewards the player with Heroism points. You can check your progress for most of these by viewing Mother Base Database, then selecting Player Data and going to the Mission Data tab.

    Code Effect
    Complete 25 missions without being spotted by the enemy (Heroism +500) Stealth Master RANK C
    Complete 50 missions without being spotted by the enemy (Heroism +2500) Stealth Master RANK B
    Complete 100 missions without being spotted by the enemy (Heroism +5000) Stealth Master RANK A
    Complete 50 missions without killing anyone (Heroism +500) Master of Non-Lethal Force RANK C
    Complete 100 missions without killing anyone (Heroism +2500) Master of Non-Lethal Force RANK B
    Complete 200 missions without killing anyone (Heroism +5000) Master of Non-Lethal Force RANK A
    Hold up 100 enemy soldiers (Heroism +1000) Hold-Up Master RANK C
    Hold up 250 enemy soldiers (Heroism +5000) Hold-Up Master RANK B
    Hold up 500 enemy soldiers (Heroism +10000) Hold-Up Master RANK A
    Complete 50 missions without using recovery items (Heroism +500) No-Recovery Master RANK C
    Complete 100 missions without using recovery items (Heroism +2500 No-Recovery Master RANK B
    Complete 200 missions without using recovery items (Heroism +5000) No-Recovery Master RANK A
    Use CQC over 100 times (Heroism +500) CQC Master RANK C
    Use CQC over 500 times (Heroism +2500) CQC Master RANK B
    Use CQC over 1000 times (Heroism +5000) CQC Master RANK A
    100 Headshots (Heroism +500) Headshot Master RANK C
    500 Headshots (Heroism +2500) Headshot Master RANK B
    1000 Headshots (Heroism +5000) Headshot Master RANK A
    Camaraderie of 250,000 (Heroism +1500) CO-OPS Specialist RANK C
    Camaraderie of 500,000 (Heroism +5500) CO-OPS Specialist RANK B
    Camaraderie of 1,000,000 (Heroism +12000) CO-OPS Specialist RANK A
    Combined total of 50 CPR Rescues, Rescue Box Uses, and Battle Cry Uses (Heroism +500) Medic Master RANK C
    Combined total of 100 CPR Rescues, Rescue Box Uses, and Battle Cry Uses (Heroism +500) Medic Master RANK B
    Combined total of 200 CPR Rescues, Rescue Box Uses, and Battle Cry Uses (Heroism +500) Medic Master RANK A
    250 CO-OP Ins (Heroism +500) CO-OP In Specialist
    250 Snake Ins (Heroism +1250) Snake Formation Specialist
    250 Snake Syncs (Heroism +2500) Sync Specialist
    Complete all Missions in both Single and CO-OPS (Heroism +2500) Mission Completion Specialist RANK C
    Complete all missions with Rank A or better in Both SINGLE and CO-OPS (Heroism +5000) Mission Completion Specialist RANK B
    Complete all missions with Rank S in both SINGLE and CO-OPS (Heroism +10000) Mission Completion Specialist RANK A
    Complete 25% of Outer Ops Missions (Heroism +500) OUTER OPS Specialist RANK C
    Complete 50% of Outer Ops Missions (Heroism +2500) OUTER OPS Specialist RANK B
    Complete 100% of Outer Ops Missions (Heroism +5000) OUTER OPS Specialist RANK A
    Complete over 500 missions (Heroism +3000) Mission Completion Pro
    Bravely complete 200 missions naked (Heroism +500) Naked Enthusiast
    Perform Fulton Recoveries on 100 people (Heroism +250) Fulton Recovery Specialist RANK C
    Perform Fulton Recoveries on 500 people (Heroism +1250) Fulton Recovery Specialist RANK B
    Perform Fulton Recoveries on 1000 people (Heroism +2500) Fulton Recovery Specialist RANK A
    Collect 15 Mech Parts (Heroism +250) Parts Recovery Specialist RANK C
    Collect 30 Mech Parts (Heroism +1250) Parts Recovery Specialist RANK B
    Collect 49 Mech Parts (Heroism +2500) Parts Recovery Specialist RANK A
    Hunt 50 Monsters (Heroism +250) Monster Hunting Specialist RANK C
    Hunt 100 Monsters (Heroism +1250) Monster Hunting Specialist RANK B
    Hunt 200 Monsters (Heroism +2500) Monster Hunting Specialist RANK A
    Receive 10% of all Insignias (Heroism +1000) Insignia Collection Specialist RANK C
    Receive 10% of all Insignias (Heroism +7250) Insignia Collection Specialist RANK B
    Receive all Insignias (Heroism +20000) Insignia Collection Specialist RANK A
    Receive 10% of all codenames (Heroism +1000) Codename Collection Specialist RANK C
    Receive 50% of all codenames (Heroism +7250) Codename Collection Specialist RANK B
    Receive all codenames (Heroism +20000) Codename Collection Specialist RANK A
    Form an all-female MSF team (Heroism +2500) WAC Coordinator
    Develop all items (Heroism +1000) Item Creator
    Develop all weapons (Heroism +1000) Weapon Creator
    Capture all mechs (Heroism +1000) Mech Hunting Specialist
    Attain the maximum level for all handguns (Heroism +2500) Handgun Specialist
    Attain the maximum level for all SMGs (Heroism +2500) Submachine Gun Specialist
    Attain the maximum level for all shotguns (Heroism +2500) Shotgun Specialist
    Attain the maximum level for all Assault Rifles (Heroism +2500) Assault Rifle Specialist
    Attain the maximum level for all Sniper Rifles (Heroism +2500) Sniper Rifle Specialist
    Attain the maximum level for all MGs (Heroism +2500) Machine Gun Specialist
    Attain the maximum level for all missile and rocket weapons(Heroism +2500) Missile Specialist
    Attain the maximum level for all throwing weapons (Heroism +2500) Grenade Specialist
    Attain the maximum level for all placeable weapons (Heroism +2500) Explosives Specialist
    Attain the maximum level for the stun rod (Heroism +200) Stun Rod Specialist
    Attain the maximum level for all weapons(Heroism +5000) Weapon Master
    Improve Mother Base to the final stage of development (Heroism +1000) Mother Base Development Specialist
    Awarded for Pursuing all development at Mother Base to the final stage (Heroism +5000) Mother Base master
    Awarded for first battle in a VS game (Heroism +50) VS Rookie
    Play 50 VS matches (Heroism +250) VS Enthusiast RANK C
    Play 100 VS matches (Heroism +1250) VS Enthusiast RANK B
    Play 250 VS matches (Heroism +2500) VS Enthusiast RANK A
    Win 50 VS matches (Heroism +250) VS Master RANK C
    Win 100 VS matches (Heroism +1250) VS Master RANK B
    Win 200 VS matches (Heroism +2500) VS Master RANK A
    Win 50 matches under Deathmatch (DM) rules (Heroism +2500) Deathmatch Master
    Win 50 matches under Team Deathmatch (TDM) rules (Heroism +2500) Team Deathmatch Master
    Win 50 matches under Base (BASE) rules (Heroism +2500) Base Master
    Win 50 matches under Capture (CAP) rules (Heroism +2500) Capture Pro
    Perform 100 kills, sleeps, and knockouts in VS (Heroism +250) VS Battle Master RANK C
    Perform 250 kills, sleeps, and knockouts in VS (Heroism +250) VS Battle Master RANK B
    Perform 500 kills, sleeps, and knockouts in VS (Heroism +250) VS Battle Master RANK A
    Perform 10 Fulton Recoveries in VS (Heroism +250) VS Fulton Recovery Specialist RANK C
    Perform 50 Fulton Recoveries in VS (Heroism +1250) VS Fulton Recovery Specialist RANK B
    Perform 100 Fulton Recoveries in VS (Heroism +2500) VS Fulton Recovery Specialist RANK A
  6. Stealth Camo & Bandana

    The Stealth Camo makes your camo status 100% making you completely invisible and the Bandana gives you infinite ammo, just like in every other Metal Gear Solid game.

    Code Effect
    Complete Extra Ops 50 with an S rank Stealth Camo
    Complete Extra Ops 119 with an S rank Bandana
  7. Unlock The True Last Battle (Zeke Battle) and Ending

    There are several requirements that have to be met before unlocking the true last battle. They don't have to be done in any particular order. First, make sure you complete all 6 Main Ops "Zadornov Search" missions, which are unlocked after the last mission (Peace Walker Battle 3). Next, the Mother Base must have been upgraded to 2 plants, which is achieved by first having a Level 40 Intel Team (just move a bunch of recruits to that section to increase its level) and then completing 13 Extra Ops missions (except Target Practice, No Limit or Training missions) to upgrade the base. It doesn't matter if the Extra Ops missions were already completed, you can repeat the same mission 13 times if you wish. You'll receive a message that the Mother Base has expanded. Do this two times. Next, you must have collected all the Metal Gear ZEKE basic parts (collected by beating bosses) and must have the Railgun installed (which is gotten from S-Ranking the Chrysalis Battle). Also, you cannot have Metal Gear ZEKE assigned to an Outer Ops Team. After fulfilling all of those requirements, you'll trigger a call from Kaz informing you that Zadornov has escaped his cell yet again. So go to Extra Ops Target Practice #1, you'll see Zadornov on the 2nd floor. After the cutscene, the true last battle will be unlocked. If by any chance you don't get the call about Zadornov escaping that 7th time, then just keep completing Extra Ops missions until your Mother Base grows more and you'll eventually get the call.

  8. In-Game T-Shirts

    In Title Screen, go to Extras > Network > Enter Passcode to enter the following codes. You also need Playstation Network account.

    Code Effect
    2000016038415 Black T-Shirt with White Peace Walker Logo
    2000016035902 Olive T-Shirt with Snake Art
    2000016032574 Gray T-Shirt with MSF Logo
    2000016032338 Gray T-Shirt with Snake Art at the Back
    2000016032390 Black T-Shirt with Peace Walker text
    2000016032567 Gray T-Shirt with MSF logo
    2000016032635 Navy Blue T-Shirt with MSF logo
    2000016032680 White T-Shirt with Big Boss text
    2000016032758 Black T-Shirt with Big Boss text
    2000016036022 Gray T-Shirt with Coffee Cup art design
    2000016038576 Plain Tan T-Shirt
    2000016537833 Big Boss face a la Che shirt (Red)
    2000016756791 Big Boss face a la Che shirt (White)
    2000016035933 White UNIQLO T-Shirt (unknown design)
    2000016535556 COoperative OPerations

Walkthroughs & FAQs

Type Name File Size
FAQ/Walkthrough FAQ/Walkthrough by Alex 'vin' Kleinheider 215K
Other Game Script by Icaris 162K
Other PassCode FAQ by kliefox 21K
FAQ/Walkthrough FAQ/Walkthrough by Punisher_X2 217K
Other Character Hacking Guide by murderedzombie 31K
Other Briefing Script by Zevii_the_Rogue 363K
Other Extra Ops 030-031 Map by Sup3rn0v4 50K
Other Extra Ops 032 Map by Sup3rn0v4 46K
FAQ/Walkthrough FAQ/Walkthrough by Travis31602 39K
FAQ FAQ by Alex 'vin' Kleinheider 49K