I don't understand how anyone could have expected DNF to be anything other than bad. In its 13 years of development the game has probably been re-written 6 different times by 3-4 different studios, each with a different graphics engine. The released product is nothing more than the realization that if the game doesn't get released now it probably never would, so they put enough bandages on the crap that 3d realms had already done and called it a day.