I think there is some kind of bug regarding the quest where you have to search for allies against Salamandra. I talked to Yaevinn, he said that I had to complete the assignment I already got from him. I went to the sewers, killed the bruxa, Yaevinn arrived and gave me the reward. After that he just kept walking around the ruins and I could only ask him why he hates humans, there was no dialog option concerning the fight against Salamandra. Is there any hope that it will be possible to talk to him about it, or should I just turn to Siegfried?