Shellshock Cheats - Sega Saturn
Primary Collection of Cheats
Press [Down], [Up], [Down], [Up]x7, [Down]x2, [A]x3 in the hangar to display a cheat menu that will allow level selection, invincibility, and full upgrades. Press [C] to activate the various options.
Successfully complete the game after all characters are unlocked. Load the cleared saved game file and the "Sound Test" option will appear at the configuration screen.