In a way, that would almost be easier, since then you could just write it off altogether. It's just not terribly unique.
Nosgoth is the sequel to the long-running Legacy of Kain series, which eventually moved over into the Soul Reaver series and kind of petered out in 2004 or so. A lot of people really enjoyed it, and there have been rumors about another sequel coming out pretty much forever. Instead of being an in-depth RPG, however, Nosgoth is a class-based asymmetrical shooter. So it's not really as much a sequel as it is a thorough pillaging of an existing IP layered onto another sort of game altogether.