You can swap weapons with allies in all games since Halo 2. I will sometimes give better weapons to my marines, hoping that they'll be more useful. For example, I'll take away their assault rifles in ...
I have just purchased Halo 3 and I would like to know the story up to it so that I can play the campaign and understand what is going on.
What are the classified codes for Halo Waypoint, what does each unlock, and where can the codes be obtained?