Normally if you left the castle after defeating the Blood God Cult, you should be on your own... After that you're supposed to go fight 'Solo' the Harpy, which is supposed to drop a key item. This key item is needed to get inside the Vampire castle and a switch should be triggered after defeating the Vampire to allow you to hire the Amazoness in the desert town pub.
Viewing post in Any walkthrough (or suggestions) available?
The problem is that the harpy fight seemed to be bugged. The moment I raised my lvl to 5 I go straight immediately to the harper, but when I see her there isn't a label that she was a Important npc, and when I fight her the game was bugged; I can't attack, I can't use my special nor my sexual skills because I got like -83 TP from cumming into her, and I can't surrender for some reason. Is there a roundabout in this scenario?