Unlock the challenges for them.
You gain titles and emblems by completing certain challenges on multiplayer, check your barracks for the challanges. Here is a list of all the titles and emblems for call of duty modern warfare 2 on the Mordern warfare wiki: http://callofduty.wikia.com/wiki/Callsigns
Your face thats the answer
modern warfare 2
get 1500 kills with each guns
By completing challenges or raising in rank, same for emblems
Yes the Full title is Call of Duty Modern Warfare 2 and it is often called MW2 or Modern Warfare 2
yup
Yes you do, but not your callsigns and emblems!!! =]
You can get them many ways such as leveling up, completing challenges, etc.
bgjnb
Everrything resets except for titles and emblems. So yes.
No it actually means Call of Duty Modern Warfare 3 the full title of the game.