SHADOW MAN

Read the strategy guide, hints, FAQ here. 

Enter the "data\scripts\menus\english" sub-directory in the directory where the game was installed. Rename "release.msc" to "release.ms1", and then "debug.msc" to "release.msc". Then, load the game to access a cheat menu with invulnerability, all weapons, all items, infinite ammo, level select, and other options.

 cheats from Cheat Code Central