Start-> Run (or Win + R keys) and type “regedit” Press Enter.
Go to the section (or click “Find …”) HKEY_CURRENT_USER-> Software-> Remedy Entertainment-> Max Payne.
We go to the “Game Level” section, and on the right you will see the available difficulty levels.
Right click and select DWORD (32 bit) Value. Double click it and set the value to 1.
Change the parameter name to the following:
Hunter = hell
Hunted Beast = nightmare
Time does not wait = timedmode