who's seth?

so now i have finished the catacombs...was easy, because when all the big skeletons came, i ran around and tried to destroy them. after i died a few times, i looked to get out of the room and stand right in front of the door to destroy them one by one. but after i ran out of the room, all skeletons fell apart, so that i didn't have to beat them anymore. after the talk to Madeanus i saved and got down to the last skeleton conjurer boss (the other 2 skeleton lords and the gigantula where easy). and with the help of the spell "thorns" i beat him and then i got back to aleroth and there georg was dead, then i talked to madeanus again and saved after i dealed with him to get some health elexires. that's the save i have now