Start the game as usual.

In the game window type: arno (No confirmation will appear)

Then:
Ctrl + F3 = Freeze all on/off
Ctrl + F4 = God mode on/off +ammo (Press several times for more ammo.
Shift + F4 = Invisibility
Shift + F10 = X/Y position of pointer
Ctrl + F12 = Win current mission.

Confirmation will appear after pressing these buttons.