I've made a list of all the different death streaks in this game. I doubt this is the complete list.

1. Armor boost: gives the player three times his normal health.
2. Recoil Boost: Gives the player shooting at you enormous recoil.
3. Damage boost: gives the player 3 times damage increase.
4. Penetration boost: lets the player shoot through anything.
5. Homing bullets: Bullets follow the enemy where ever they go.
6. Armor boost V2: Its basically just maximum suit, but instead of having to get 10 dogtags, you just have to be a bad player and die a lot.
   

...wut? Is this supposed to be a joke? Cuz I ain't laughing.

What? I've had a 6 Death streak before but I've gotten anything other than Armor boost

hahahah yea its a joke