Unlockable - Unlock special characters. | |
| Naked Snake | Beat easy mode in infinity mission. |
| Old Snake | Beat Medium mode in infinity mission. |
| Raiden | Beat hard mode in infinity mission. |
| Roy Cambell | Beat extreme in infinity mission. |
Password - Unlockable Character Passwords | |
| Enter the password in the "Recruit" "Password" section of the main ingame menu. | |
| Unlock Arms Magazine Soldier | TTOGZWSREYD |
