Honestly, I would be pleasantly surprised about a game/movie without a plot twist or were the bad guy isn't actually good but misunderstood.
I think that is one of the things I liked about the story of Rage. As shallow as it was, it was at least straight forward without any idiotic plot twists or back stabbing.
And even if I'm the good guy, I can hardly resist pushing that shiny red button that launches nukes. I always launch nukes when I can!