halo 4 will be 1-4 players, i just noticed so i thought i would share with the people who did not know, the link to prove it is here http://halo.xbox.com/en-us/games/halo4/Overview its at the side with all the info
Not surprising, considering every other Halo has had co-op. 
That was to be expected, every Halo has had co-op, and 4 player co-op is has somehow made its way into Halo… I’m still stuck in the past when Halo 2 and CE where the big things and Halo 3 wasn’t even released yet… I miss Halo 2.