There's a way to kill Jake at low levels. But only the one that comes out of the grave when you put his wife's flowers on it. Just prepare to run like crazy.
When he activates, run towards Joram's house. Joram will come out and shoot fireballs at him. Make sure you keep him active so he doesn't attack Joram. If Joram kills him then you don't get the exp. After he has like 1 small line of life left, quickly run away from Joram so that Joram doesn't kill it.
Then kill it yourself. You'll probly level up immediately!
