Metal Gear Solid: Portable Ops Cheats (PSP)

After Snake is captured and rescued you can contact Sigint on the radio at the Comm stage.
He will need to be rescued in the town.

Enter "MGA2VE" as a password to unlock Venus. Alternately, have a Metal Gear
Ac!d 2 saved game file on your Memory Stick. Successfully complete the game, then save
after the credits and load the game. Get to a point where you can save the game. Save it,
then exit the game completely. Restart the PSP, load your game, and you will get a message
saying you have a new solider, which is Venus.

Enter "Hunter-n" as a password to unlock . Alternately, kill Null by health or
stamina depletion with the MK22 in both fights against him. Successfully complete the
game, then save after the credits and load the game. Get to a point where you can save the
game. Save it, then exit the game completely. Restart the PSP, load your game, and you
will get a message saying you have a new solider, which is Null.

Successfully complete the game with a "Technician" rating of 99 to unlock the Stealth
Camouflage, which allows you to become invisible for a limited time.

Enter "!TRAUMER" as a password to unlock Ga Ko.

Enter "PK +ESP" as a password to unlock Ursula.

Enter "SATURNV" as a password to unlock Sigint. Alternately, give the Saturn V
blueprints to Sokolov.

Enter "THE-L" as a password to unlock Elisa. Alternately, successfully complete the
game with a "Medic" rating of 80. Play the game a second time. Save the game, exit, then
load your game and she will join you.

Enter "1+2-3" as a password to unlock Major Zero. Alternately, have a Metal Gear
Solid: Digital Graphic Novel saved game file on your Memory Stick. Successfully
complete the game, then save after the credits and load the game. Get to a point where you
can save the game. Save it, then exit the game completely. Restart the PSP, load your
game, and you will get a message saying you have a new solider, which is Major Zero.

Enter "ERBE" as a password to unlock Gene.

During the mission before the Cunningham fight, the frequency for the first frequency
door is scratched on the wall behind the guard that is posted in the room.

The frequency code for the doors at the Silo Complex are 145.75 for the first and
148.51 for the second.

Successfully complete the game to unlock the Extreme difficulty setting.

Enter "T.F-ACID" as a password to unlock Teliko. Alternately, have a Metal Gear
Ac!d saved game file on your Memory Stick. Successfully complete the game, then save
after the credits and load the game. Get to a point where you can save the game. Save it,
then exit the game completely. Restart the PSP, load your game, and you will get a message
saying you have a new solider, which is Teliko.

Enter "R.R.R." as a password to unlock Ocelot.

Enter "E.APPLE" as a password to unlock Eva.

To get Null the cyberninja, go to recruit and enter password HUNTER-N. He comes
with a powerful Machete and is an expert with SMGs.

To get Major Zero from MGS 3, go to enter password 1+2-3. He is a great character
although he has low health.

Have two weapons equipped. When you are close to running out in your clip, change weapons
then immediately change back and your gun will be reloaded.

Enter "PM-EMS" as a password to unlock Null. Alternately, contact her in the Comm
Building after Roy is feeling better from his malaria. She will offer to help. Place spies
in the hospital and wait. She will eventually become a side mission to recruit.

Enter "JUNKER" as a password to unlock Cunningham. Alternately, defeat Cunningham
on any difficulty setting by stamina depletion with the MK22 and successfully complete the
game before the in-game date reaches January 1, 1971. Save after the credits and load the
game. Get to a point where you can save the game. Save it, then exit the game completely.
Restart the PSP, load your game, and you will get a message saying you have a new solider,
which is Cunningham.

Complete the game.