From the description, it seems to me as if he mostly killed inocents (therefore, random townsfolk), and "only" 150 of them. They unually have less then 10 HP and get killed with one or two hits, and give less XP then a goblin.shouldn't Brythe, be higher than level 7 if he's murdered hundreds of people? perhaps you should have to be a higher level before you can get him? i don't know, its your mod
So, even if he killed 150 people, he won't have gained many XP from it...