Go in with as little knowledge as possible, you can play this or Replicant first. There's two major twists one that relies on the fact that you have played Replicant and another that relies on the fact that you haven't played Replicant. Which is a bit dumb, but it doesn't affect the game too much I wish more ARPG's had stories combat and music half this good, We have been spoiled. One of my all-time favourites.