Looking at this Youtube video, the story is actually very exciting, however you hardly notice what's going on when your playing the game. For example, the mission where you warn there is a Hive army on the moon, hardly gets any response, making the next mission feel unimportant and the overall story not interersting at all. . It would make the story mode so much more fun to play, if they added more cutscenes to explain the plot and make you excited to play the next mission.