Play Demolition, it gives you the most xp.
why the fack r u playing Pokemon man up and play some mw2
if u mean what level u have to be to prestige in mw2 the answer is level 70
to unlock the stinger missle in mw2 you must be level 30 or sergent major II
Reach Prestige 1 and Level 69.
Level 4
u have to level all the way up to level 70 and then go into barracks and select prestige mode.
Level 70, which is the level cap.
commander
Kill an enemy within ten seconds of tactically inserting 25 times.
Level 22.
you carnt do mw2 campain two player
in cod black ops there is a 15th prestige and in mw2 there is only 10 prestiges because to prestige in mw2 you have to get to level 70 but in black ops you only have to get to level 50 to prestige