When you play The Dark Urge, you will be faced with some questionable choices. One of these choices is to kill Isobel after meeting her at the Last Light Inn. This article will guide you on what will happen if you Kill Isobel.
Upon arriving at the Last Light Inn, you’ll meet Isobel. After resting at camp, you will be visited by Sceleritas Fel, who will assign you the task of killing Isobel in exchange for a special reward. You can refer to the below video for the entire walkthrough
When you approach Isobel, you will be offered two choices: Kill her or Talk to her. If you decide to kill her, you will do it instantly. However, if you talk to her, you will end up fighting anyway.
After killing Isobel, head back to your camp and rest again. Fel will return to you and award you with the Slayer Form, which allows you to transform into a monster.