there is only two versions 1 if you get captured by the werewolf at the outskirts and the 2nd being you need the cursed item of the werewolf fur and het captured by her again in a T2 area (just move around and after 10 turns she spawn in and chases you down)
or elite variant you need to be already corrupted and get captured in a T2 area using the werewolf cursed artifact to fully corrupt youself into an elite variant