I wonder, will there be a 2 player co-op like in halo 1-2-3, from the beggining to the ned?Then what/hwo will the second player be?In firefight(the new gametype, ODST exclusive) 4 people play as one ODST each and some people can play as Seargent Jhonson. But will thre be a 2 player function on one box?