Cheat mode:
Start the game, enter the "History" menu then select "August 6th, 1945 (Hiroshima)". Click on the flashing book in bottom right corner to enable cheat mode. Press one of the following keys during game play to activate the corresponding cheat function. Note: You can also enable "Hell Cheat" mode by highlighting "August 9th, 1945 (Nagasaki)" at the history screen and clicking on the book that is not flashing in the bottom right corner.

Effect	Key
Win mission	W
Lose Mission	L
Reload ammunition	A
Kill onscreen enemies	K