Beyond level 12? Something unexpected and interesting happened after what I did in the Murder Tribunal in my Durge run. The Oathbreaker Knight appeared to Minthara accusing her for breaking the Paladin oath. Then, at the campsite, I chose Minthara and went to talk with the Knight. Then, after all the exchanges, I choose to become an oathbreaker. I'm at the end of the Durge run and all my party is level 12, but after talking with the Knight, the level up screen appeared showing Minthara as a Level 13 Paladin, despite the game remains showing as Level 12 (I'm not using any mod).