To unlock the extras go to options and select extras and enter one of the following codes:

Invincibility (Single Player Only): SUPERCYC
One Hit Kills (Single Player Only): DUSTYAYRES
Unlimited Ammo (Single Player Only): TRGRHPY
Unlock All Levels (Single Player Only): RECLAMATION
Unlock Scott Bernards Cyclone (Multiplayer): LTNTCMDR
Unlock Rook Bartleys Cyclone (Multiplayer): BLUEANGLS
Unlock Lancers Cyclone (Multiplayer): YLLWFLLW
Unlock Rands Cyclone (Multiplayer): KIDGLOVES

Note: Passwords are case sensitive.