All Working Return Fire Cheats - 3DO

Debug mode
Enter the password "WOLF", then press [RS] + [LS] + [P] during game play. The following things may be done under debug mode: play and change pitch of all sounds; display frame rate based on CPU activity; and force the flag to appear in the first building that is destroyed.

Invincibility
This code works in one and two player modes and must be done separately for each vehicle. Choose a vehicle from the vehicle select screen. Press [C] to display the fuel/ammunition screen. Hold [RS] + [LS] + [B] + [C], then press [X] to bring up the exit menu. While the "Do Not Exit" icon is highlighted and all the buttons except [C] are pressed, press [Down] + [A]. A "double" vehicle select sound will confirm the code.

Lock all levels
Enter the password "ZZZZ" to remove access from all previously completed levels.

Opening sequence
Enter the password "TITL" to play the opening sequence.

Self-destruct
Press [A] + [B] + [C] to self-destruct. It can be used as a quick way to return to the bunker.

Zoom out
Press [A] + [B] and to zoom out the view by about 25%. This only works when the camera is fully zoomed in.

Level	One player	Two player
1	TNOD	POTS
2	YALP	SRAW
3	HTIW	THAT
4	LAER	LLIK
5	SNUG	EVAS
6	TSUJ	HCAE
7	SIHT	EFIL
8	EMAG	MROF