find a friend and kill him over and over
Sadly, you cannot get gamer score points in CoD: 4 Modern Warfare Multiplayer.
Yes, there is online multiplayer on Call of Duty 4: Modern Warfare.
Errr... By killing people and getting experience points?
U go to multiplayer if no multiplayer u beat
Call of Duty World at War, Modern Warfare, Modern Warfare 2, Black Ops, and Modern Warfare 3 all have online multiplayer.
Yes You Can
Unfortunately no, you can't play multiplayer on Call of Duty Modern Warfare 1 or on Call of Duty Modern Warfare 2 on the same screen. But on Call of Duty Modern Warfare 3 and Call of Duty Modern Warfare Black Ops you can play multiplayer on the same screen. There is an new Call of Duty Black Ops 2 coming out soon though, so I expect that to also have that feature, since its newer.
There are a total of 70 levels (ranks) in Modern Warfare 2 Multiplayer.
Sadly no.
No you can't.
no, but there is call of duty reflex, a remake of CoD4 with multiplayer.
No. There is only Nintendo WFC.