I seemed to have missed a lot of quests here. What did I miss here and do I need it to win the game? I met the vampire chicks first and accepted their quest. When I saw the lich, he wouldn't talk to me and just attacked. Eventually, I aquired his staff and some unidentified scrolls. I can't go into the treasury and a few other places. Is the staff my objective here? I am about to visit the vampire gals and give them all meteorshower enemas...

Please advise...

Thanks