Well scripted and much deeper story than most. To this day most FPS are bland. I'm not talking about the action but the story behind them. Story development sucked. Ok you go in and kill a bunch of Germans, whoop de doo.
World is in danger, go kill all aliens.
It's the future, this is a life or death tournament, go kill your next door neighbor. Great action and gameplay mechanics make a good game but with good story development and plotlines a game can transcend good and become great. Look at most of the hit movies of all time and usually there is a great story in there to get you emotionally involved, from Star Wars to Braveheart, all had a compelling storyline. I agree entirely with you. I don't know if you play much console games, but in Japan some of the companies like Squaresoft and Nintendo do that, hence the excellent storylines in Final Fantasy and such.