You have to get at least 2 or more kills with a single RPG-7 shot or AT4-HS shot 5 times (multi RPG 1 challenge under precision at the barracks)
Reach Prestige 1 and Level 69.
Get stabbed by someone who has that title set as his active callsign.
Booyah also means Oh Yeah! or in your face
you have to get 250 kills with melee
No
Get to ninth prestige
Use a title that is really hard to get. Such as a 2500 with the spas 12 title Thats what I have ;)
You have to call in two EMP's.
prestige and get to level 35
i dnt know
I believe you get it for calling in 50 uavs.
I know one person from the Booyah team, David Diaz.