Cheat mode
Type arno during game play to enable cheat mode. No confirmation will appear. Then, enter one of the following codes to activate the corresponding cheat function. A confirmation will appear after successful code entry:

[Ctrl] + [F3] - Toggle freeze all
[Ctrl] + [F4] - Toggle God mode, more ammo and items; repeat for more ammo
[Ctrl] + [F12] - Win current mission
[Shift] + [F4] - Invisibility
[Shift] + [F10] - Pointer position in X and Y coordinates