Search google for
"Duke Nukem Forever Cheat Enabler.zip"
I found it on game copy world.
I'd post that file which is nothing but a couple of user.ini file and instructions. But there doesn't seem to be anyway for users to add cheats like that to this game area.
And why is that?
It gives you
F2 - Toggle God Mode
F3 - Maximum Ego
F4 - All Weapons & Inventory
F5 - Toggle Unlimited Ammo
F6 - Toggle Clip Mode
F7 - Toggle Fly Mode
F8 - Freeze\Unfreeze Time
F9 - Toggle Invisibility
F10 - Take Screenshot
F11 - Toggle Shrink Mode
F12 - Toggle 3rd person view
doesn't work for my Version (Retail + UK)
Edit: new Version out and now it works fine.
[Edited by bigkosy, 6/20/2011 8:01:28 AM]