well it is on certain ranks, im not too fully sure what are those ranks but if you go to your killstreak then it will tell you how many levels you need to unlock a new kill streak
Because in C.O.D MW3 all of your kills count towards kill streak rewards. For example if after you killed the right amount of people to unlock the pred missile you can unlock the next award in your kill streak set with kills gained from using the Predator missile. Hope I helped.
No.
Get a 25 kill Streak And change your kill streak settings so it will give you a nuke on the 25th kill and unlock it
Unfortunately no you can only have 3 kill streaks equipped at a time.
no not possible
You can play online multiplayer, but with pre-set weapon classes (Create a Class is unlocked at level 4). No weapon challenges are available (as they are unlocked at level 5) and killstreak rewards (unlocked at level 10) are pre-set at; 3 kill streak - UAV, 4 kill streak - Care Package (random other killstreak reward gained immediatly with no unlock required) and 5 kill streak - Predator Missile. When you reach level 10, you will be able to unlock one extra killstreak reward. From then on you gain a new killstreak unlock every 6-8 levels or so. Weapons are unlocked regularly, say, evey 2 or 3 levels and new challenges are unlocked at every level. Prestiege mode is unlocked at level 70
Every level or so you will unlock a point, and you can use it on which ever kill streak you want.
The preferred kill streak rewards players use to acquire a Tactical Nuke kill streak reward in Call of Duty: Modern Warfare 2 is seven kills Harrier Strike, eleven kills AC-130, and Tactical Nuke. And dumb@$$es who are nubes at this game...you NEED TO UNLOCK THE NUKE TO GET IT!
25 kills in a row
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.
unlock it via leveling up, then select kill streaks from the multiplayer player match menu
You have to call in 50 Pave lows in either a care package or as a kill streak reward