Within the game, press ENTER and enter one of the following codes:

paul haney sees all = Show enemy soldiers
dolemite = Soldiers are invincible!
autowin! = Win instantly
toggle bottombar = Switch bottom display
set_campaign x = Where X equals one of the options below: select campaign

Add one of these to the set_campaign cheat above:

Angola_tutorial
Angola
Romania
Kola
Caribbean
Kola_2
Ecuador
Peru
Angola_2