GARBLE: enables cheat mode.
ARNOLD: gives all weapons.
COUNTERS: shows the game counters.
HELLO: gives response.
ICANTSEE: gives sniper sight.
ILLBEBACK: skips to next mission.
JOYCAM: switches to third person perspective (only in multiplayer
with joystick/ pad).
NITROUS: speeds up the game.
SLUGS: gives full ammo
SUPERTRACKER: gives the motion tracker (v1.01 only).
SUPERUZI: gives the super uzi.
SURGERY: full health and ammo.
TARGET: gives a targeting box for enemies.
VERSION: shows version number.
WHOAMI: shows your current name.