You can get the intervention once you can create classes at lvl 4
when you are level 4 you unlock the intervention and 50 cal.
To unlock the Intervention emblem, you must get 1,000 kills with the Intervention after Prestiging at least once.
get 2500 headshots
ok the level is 12 and 13 level if you unlock it in level 12 then you will unlock scare crow hill in the 13 level if you unlock golden in level 13 then it will be level 14 to unlock scare crow hills
secondary level
You unlock it at level 14.
You unlock it at level 11.
Gun-------------------------Unlock Level Barrett .50 Cal-----------1 Intervention--------------1 WA2000-------------------36 M21 EBR-------------------56
You unlock it at level 36.
level 49 is when you unlock the m8al in bo2
You unlock the Tactical Nuke at level 51 or 52. You can unlock the Nuke at whatever level that you like, as long as in that level, you are aloud to unlock it. Like, at level.... 15, lets say, you can unlock any of the killstreak rewards, even the Nuke! hope this helps!
level 25 to unlock the pumkpmik