FAIL.
on split screen, no, on live, yes
You can't
No, you may not play Split Screen!
No because they are diffrent files
^^yes 6you can rank up off line i am 4th prestige on split screen and 5th on xbox live, but your unlocks do not carry over from xbox live you have to do them seperatly edit: i believe you can check the "xbox live unlocks" toggle to on, however this only pulls your live unlocks into the split screen, and any xp gained/challenges unlocked/etc wont count towards your live account. (im 85% on this).
yes in local games and spec ops not online
No. None of the Modern Warfare series have been 2 player online (aka. online split screen).
No you can't but if you have xbox live you can play multi player but not the split screen
You must go to game settings and turn Xbox Live Unlocks off.
Believe it or not.. that would be me with 1,536,839 headshots, and 5,385,359,912 kills.
Sadly... no. You can play Special Ops multiplayer, Xbox Live and split screen. And you can play Xbox Live, Xbox Live but not split screen
no you can not