So many lines in this game make me roll my eyes. Perhaps it was intentional, but they could have done so much to give your character a bit more agency [i]while[/i] providing exposition. Given all of the time that they spend together doing inane tasks, you'd think your undead guardian might ask a few questions of the ghost. For starters: "How did you bring me back to life?" Or perhaps "Am I alive?" Even if the ghost just brushed off your questions, it would have worked wonders at giving your character a personality, giving the world a sense of atmosphere (even if it is one of confusion and unanswered questions), and giving your character AGENCY. At this point, even if they use DLC to redirect the story, it won't fit because a twist implies a pre-existing expectation about where the story is going. Even a Bioshock-style revelation about your character's lack of agency wouldn't make sense.