Metal Gear Solid: Portable Ops cheats and cheat codes for Sony PSP

Unlock Extreme difficulty level:
Complete the game.

Stealth camouflage:
Unlocked by completing the game with a Technician status level of 99.


Cheat codes for the Nort American version of the game:

Venus: Enter MGA2VE as a password.
Teliko: Enter T.F-ACID as a password.
Sokolov: Enter SATURNV as a password.
Sigint: Enter DARPA-1 as a password.
Raikov: Enter IVN =RV as a password.
Python: Enter LQ.N2 as a password.
Paramedic: Enter PM-EMS as a password.
Ocelot: Enter R.R.R. as a password.
Null: Enter HUNTER-N as a password.
Major Zero : Enter 1+2-3 as a password.
Gene: Enter ERBE as a password.
Gako soldier: Enter ! TRAUMER as a password.
Eva: Enter E.APPLE as a password.
Cunningham: Enter JUNKER as a password.
Ursula*: Enter PK +ESP as a password.
Elisa*: Enter THE-L as a password.

* - You cannot unlock them at the same time.


Cheat codes for the European version of the game:

Venus: Enter @VESPER as a password.
Teliko: Enter SHINE! as a password.
Sokolov: Enter VOSTOK as a password.
Sigint: Enter D+ARPA as a password.
Raikov: Enter SKAZKA as a password.
Python: Enter GUFO as a password.
Paramedic: Enter E.M.S. as a password.
Ocelot: Enter THE-SON as a password.
Null: Enter ALL=0 as a password.
Major Zero: Enter GALAXY-0 as a password.
Gene: Enter 9-VIPER as a password.
Gako soldier: Enter GAK.O as a password.
Eva: Enter 016K/HYH as a password.
Cunningham: Enter CUN=BOA as a password.
Ursula*: Enter ESP:ASP as a password.
Elisa*: Enter E.WASP as a password.

* - You cannot unlock them at the same time.