A friend and I are planning a 1 on 1 campaign set in the Old World. I will be GMing the game, and he will be playing a Witch Hunter. The idea is that he will play a Witch Hunter with a full compliment of advances, along with magical lore of Sigmar, and he will be the kind of wandering hero type. He is an advanced character, with significant contacts as a result of a long career in the church and as a witch hunter. I am not planning on letting him take advances frequently, if ever once he begins, as his character will be pretty maxed out in the start. He will have a collection of colleagues in major cities and major institutions, a list of friends and enemies and how they became that, and a network of informants and lesser investigators. But mostly, he will be wandering the length and breadth of the empire with only his horse and one NPC companion, kind of a squire type to stay in the rear with the gear while our trusty hero stomps chaos out of the Old World.
My question is this: What advice does anyone here have for running a high level game in the WFRP setting? The idea is there will be a good level of combat, and he will be a very capable combat character, but also he will have religious and political allies, enemies, responsibilities, and so on and so fourth. How can I maximize these other elements of the game? My player is writing a detailed character history complete with stories of major successes, failures and accomplishments in life; family, church and work history and connections, etc. I am also preparing a detailed docier on people he knows, who knows him. likes him and so fourth. The main think I need help with is how to make such a large world come to life for such a powerful character? What kinds of hooks and plot devices have others found to work well in these types of situations? What kinds of pitfalls should I look for and try to avoid? Any and all advice is appreciated. Thanks!