Guerrilla War Cheats
NES Cheats
Level and difficulty selection
Select a one or two player game, then hold A or B and press Start to begin game play. Alternatively, hold A + B and power on the NES. Continue to hold those buttons and press Start(2).
Continue game play
Hold A + B immediately after the game over screen appears.
Options
Press Select + Start + B at the player number selection screen. Press Up or Down to select an option, press A to change the current option, and press Start to begin game play.