If a campaign is focused on the PC being fighted by the force of evil rather than the reverse, does that count ? No ? Well. In my campaign, the main opposition to the forces of evil are other forces of evil. Good and Evil are not different colors for the pawns of the chessboards, but philosophy, and an evil guy knows that his selfish goals are best served if he's the only wolf in the sheepfold. Thus, evil strife against itself as much as it strife against good. Fortunately for the world, because the forces of good are much less strong, numerous, diverse, and easily recruited. I'm trying to have a place akin to a fantasy version of the real world, in fact: evil is everywhere, including among the "good guy", and saving the world from it while keeping one's hands clean is nigh impossible.
As a player, I am enduring the Northern Journey. This campaign don't really lets you fight the forces of evil, you're to busy obeying them reluctantly.