Discuss Divinity Original Sin, as well as comments posted to our Divinity Original Sin Wiki and Divinity Original Sin 2 Wiki
 3
 
I killed everyone...
I had persuasion 6 and I was able to persuade through all the dialogs, helped Gareth kill Alexander (epic fight) and he wasn't glitched. Remember to cast Spirit vision if you decide to kill Alexander to continue with the follow up quest.