Maybe the person has the power of: Kings, Presidents, and Emperors all in one. He most likely has employed heads of countries for each country, and oversees what they do to the fullest extent.
Like what he said, you can't see it in the game but there are little pieces of material that hold the armor in place, and thus those are the weak spots.
Pretty cool idea. But Halo is more of a FPS than an RPG. It would also be weird playing as a 8 year old kid, to me. At first it seems cool, but it wouldn't real turn out to be such a success as the other games.
I had the same problem. All I did was sign out of Xbox LIVE and it allowed me to play it. I don't know if this is the case for everyone, but it sure fixed my problem.