Seek and Destroy

* After you have chosen NEW GAME or RESUME, press fast [LeftShift],
[Ctrl] and [LeftAlt] and you get a menu to choose a mission.
* On the objective screen type GIMME and you can choose the phases.
* Type CAPO in the shop and everything is free.
* These codes should be typed during the game:
AMO Ammo
MEGA Best vehicle
LIFE Hitpoints
(It appears that all letters must be pressed at the same time) (Information from Cheat Machine)