Right off the top of my head, I would say that you could run a Face/Cat Burglar type character, sort of like Fianchetto. He isn't known for his skill with a weapon, but he's second to none as a spy.
Another one that might work is a Package runner / Infiltrator type character, lots of movement abilities and evasion, as well as Urban Infiltration.
Basically, a non-combat type character can be done (and some of them are very useful, actually) but if you plan on going full pacifist, it limits your options greatly.