If you can go online on your PSP, the you can get the EU camo soldiers. The easiest way to obtain them is to create a new game, a capture mission on real combat mode (RC). Make it so only one other player can join. Set the kerotan keep time to 5 seconds. OK. When the game starts, make your way to the kerotan and keep it for the 5 seconds. You will win and you will get new recruits for winning. You only get the camo soldiers if you are lucky.
I have obtained the following camo soldiers Denmark Camo French Camo UK camo Italian camo German Camo Finland Camo A Blck Camo Soldier Spanish Camo
English Version cheats!!!!!!!Added 15 Jun 2008, ID #2193
Passwords on here not work? Here are the English version of the secret characters. CUN=BOA, Cunningham E.WASP,Elisa (can't use Ursula aswell) ESP:ASP, Ursula (can't use Elisa aswell) 016K/HYH, Eva 9-VIPER, Gene ALL=0, Null THE-SON, Ocelot E.M.S. Paramedic GUFO, Python SKAZKA, Raikov D+ARPA, Sigint VOSTOK, Sokolov SHINE!, Teliko @VESPER, Venus GALAXY-0, Major Zero. It took me ages to get these hope they help. Dex
Want to get the Stealth Camo? Well you can just finish the game with your technition level at 99, the place to get the best engineers is the Plant where you fight with the Metal Gear. Just make sure to get the engineer people not the normal soldiers.