To unlock the Intervention emblem, you must get 1,000 kills with the Intervention after Prestiging at least once.
when you are level 4 you unlock the intervention and 50 cal.
get 2500 headshots
its probably one of the hardest challenges to complete.you have to fire an entire lmg mag into enemies without missing
get to level 48 and you unlock the ACR
no
the 50 cal has 10 and the intervention has 5
Which one?Gold: unlock all attachmentsGrey/Silver: 500 kills (need to be prestige)Grey/Silver with headshot icon: 250 headshotsWhite Skulls: 2500 killsGold Skulls: 1000 headshotscheck here for all the titles and emblems: http://callofduty.wikia.com/wiki/CallsignsYou have to get 10000 kills with the intervention.
Level 48
Intervention, it is good for quick scopes
..because it is a badly made game.
A lion
lvl 34