Call of Duty 4: 7 kill streak: Attack Helicopter
Call of Duty World at War: 7 Kill streak: Attack dogs
Call of Duty Modern Warfare 2: 25 kill streak: Tactical Nuke
Call of Duty Black Ops: 11 kill streak: Gunship or attack dogs.
To get the Mario looking emblem of Captain Price you must get a 10 kill streak with no killstreak rewards selected. To clarify: Go into your killstreak reward screen and untick your 3 rewards then back out. Get a 10 Killstreak like this and the emblem is yours.
Call in 25 Emergency Air Drop Killstreak Rewards.
It is 11 it is either attack dogs or a gunship
I'm guessing you mean MW2 and the challenge is one where you have to get a 10 killstreak without having any killstreak rewards equipped. For the record, it's inspired by Mario 8-bit but it's meant to be Soap McTavish.
Well, in CoD4 killstreak rewards end with a helicopter after 7 kills. The highest scored by a person ever, I do not know. It is hard to tell as many players glitch, hack or cheat the game and therefore you cannot use their numbers as a basis for information. My highest killstreak is 27, and it stopped there because the game ended. I was 27-0 with the potential to keep going, so it is tough to say what the highest killstreaks are. But there are people with 40-50 killstreaks.
No, you have to use the newest one before you can use any others.
Yes anything that you don't call a care package for adds to your killstreak
Unfortunately no, although you could always be killed and then earn the lower one again.
Someone must knife you while using the title STD.
You cant customize your team. you can customize your weapons,perks,title,emblem and killstreak rewards but not a team
I think you have to get 10+ kills with a single killstreak. IE. get at least ten kills with a chopper gunner or ac130...but im not sure if this is right... i have it but i cant remember exactly how to get it. You have to get all your Killstreak Rewards in under 20 seconds. The easiest way to do this is 3/4/5 set up. The 10+ killstreak title is Omnicide
The best killstreak is the Tactical Nuke but use killstreaks that you can get frequently.