I have made a PKG File which you can install and play the Multiplayer for this game online.
install the PKG then it will tell you to update the game, update it and it will go straight to Multiplayer Menu, so it wont show the Campaign mode etc.
MAKE SURE USRDIR IS IN dev_hdd0/MW2_GAME/USRDIR
PS. MAKE SURE ALL PREVIOUS MODERN WARFARE 2 GAME DATA IS DELETED FROM GAME DATA UTILITYCode: