After MONTHS of waiting, i decided to load an OLD file before I went back to kill Ansur, but this time i cleared all i could do on Lower City, EVERYTHING (houses, ball, dracula, murders, clown pieces and KEY PART! destroyed the faundry), went back to Wyrmsx and nuked everthing. They key was to not leave anything behind of Lower city quest so that the only path available was to kill Gortash and Ansul.