Probably one of the best DLC's out there. I also enjoyed DLC more than base game. Which I think is due to the density of the new planet we are in. In the base game you have the whole space to figure out a puzzle, so it can get confusing. DLC holds everything both tightly and loosely in the same area, with different versions. Thus giving a better and faster puzzle experience, imo.

Not going in to the story, atmosphere etc. (as they are still perfect thanks to the base game), newly added horror sections give a fresh new gameplay to the game.