To use these cheats first press F11 during a mission and type...

ISITWENTY     (to reveal entire map)
ISILETSBAIL   (to end the current level)
ISIWHEELS     (gives you the INCREDIBLE custom configurable X-Car! Can you say Kick Butt?)
                       (You must win the mission to get access to the X-Car.)
ISIFATPACKED  (Gives all weapons, ammo, and powerups) 
ISIQ          (GOD MODE!)
ISISLEEP      (Freezes enemy's dead in their tracks)

(Submitted by Chan Tz - cdrake@net-cess.com)