In Call of Duty: Black Ops you get special rewards for obtaining a set amount of kills in one of your lives. You can only choose 3 at a time and you start off with 3 only. Obviously you cannot choose two perks that activate at the same killstreak number such as the Spy Plane and RC-XD. Later you get the ability to unlock other killstreaks along with things like attachments. The killstreaks are as follows:
Spy Plane
3 Kills to Activate
Default Unlocked.
+100 XP When Called in.
700 Health
Shows where your enemies are on your radar/mini map. The plane lasts for 30 seconds or can be shot down before the time expires. If shot down you are awarded 100 XP
RC-XD
3 Kills to Activate
Purchase for C1200
+100 XP When Called In.
10 Health
A remote controlled car with explosives. LB/L2 – Boost, LT/L1 – Handbreak, RT/R1 – Detonate, Sticks to move. The RC-XD will detonate itself after 30 seconds if you do not detonate it before the time runs out. If destroyed you are awarded 100 XP. Does atleast 300 damage at point blank range, which means the flak jacket won’t protect you if it’s right next to you.
Counter-Spy Plane
4 Kills to Activate
Purchase for C1600
+100 XP When Called in.
700 Health
Counters and disables your enemies radar/mini map for 30 seconds or can be shot down before the time expires. If shot down you are awarded 150 XP.
SAM Turret
4 Kills to Activate
Purchase for C1600.
+100 XP When Called in.
800 Health
Pop smoke to air drop a computer operated SAM Turret you can place anywhere. This turret will destroy any enemy aircraft near it. The missiles it fires are weaker than the launcher missiles. It will take down spy planes with one missile, but the larger aircrafts need two hits plus one other missile to pop the flares. Lasts 90 seconds. Can be destroyed with one knife like the sentry gun.
Care Package
5 Kills to Activate
Default Unlocked.
+150 XP When Called in.
Pop smoke to air drop a random killstreak, special weapon, or ammo crate. If you can shoot down the enemy helicopter that brings in the enemy care package, you will be awarded 400XP. It takes about a half a second to capture your own crate, and 3 seconds for a teammate or enemy to capture your crate.
Percentage for Care Package Contents:
Ammo – 20%
Spy Plane – 15%
Counter Spy Plane – 15%
RC XD – 9%
Valkyrie Rockets – 5%
Mortar Team – 5%
Sentry Gun – 5%
SAM Turret – 5%
Rolling Thunder – 3%
Grim Reaper – 3%
Napalm Strike – 3%
Blackbird – 3%
Attack Helicopter – 3%
Death Machine – 2%
Chopper Gunner – 2%
Attack Dogs – 1%
Gunship – 1%
Percentage for changing the contents of a care package with Hardline Pro:
Ammo – 9%
Spy Plane – 9%
Counter Spy Plane – 9%
RC XD – 9%
Valkyrie Rockets – 9%
Mortar Team – 9%
Sentry Gun – 9%
SAM Turret – 9%
Rolling Thunder – 4%
Grim Reaper – 4%
Napalm Strike – 4%
Blackbird – 4%
Attack Helicopter – 4%
Death Machine – 3%
Chopper Gunner – 3%
Attack Dogs – 1%
Gunship – 1%
Napalm Strike
5 Kills to Activate
Purchase for C2400
+150 XP When Called in.
Choose an area of the map to be covered in deadly Napalm. The icon you use to choose a location is V shaped. Make sure the opening of the V is the area you want to be covered in Napalm. The flames will stay on the map for 10 seconds. If anyone touches the flames they will die, unless they have flak jacket pro.
Sentry Gun
6 Kills to Activate
Purchase for C3200
+200 XP When Called in.
800 Health
Pop smoke to air drop a computer operated sentry gun. This gun fires automatically like a machine gun to any enemy in front of it. Can be destroyed with one knife melee attack. Lasts 90 Seconds.
Mortar Team
6 Kills to Activate
Purchase for C32000
+200 XP When Called In.
Choose 3 areas of the map to be hit with two mortars each. Does 50-300 Damage within a 7.5 Meter Range.
Attack Helicopter
7 Kills to Activate
Default Unlocked.
+200 XP When Called in.
Around 5500 Health
Call in a computer operated helicopter that flies around the selected area. AKA Cobra. Lasts for 75 seconds. Pops flares if a lock on rocket is shot at it. If shot down you are awarded 400XP
Valkyrie Rockets
7 Kills to Activate
Purchase for C4000
+200 XP When Called in.
Pop smoke to drop a crate with two valkyrie rockets. Aim and fire to launch a rocket that can be remote controlled in the air. LB/L1 to boost speed and RT/R1 to detonate. You are given a fuel bar for the amount of time you can control the Valkyrie Rockets. If you don’t boost you will have 20 seconds to control the rockets and find a target. Valkyrie Rockets can be shot down. They do 100-400 Damage within a 7.5 Meter blast radius.
Blackbird
8 Kills to Activate
Purchase for C45000
+250 XP When Called in.
AKA SR-71. Shows enemy positions and the directions they’re facing on the mini map. Stops refreshing at 45 seconds, enemies completely disappear off the radar at 50 seconds.
Rolling Thunder
8 Kills to Activate
Purchase for C4500
+250 XP When Called In.
AKA B52. Select a location on the map to drop a few giant bombs. The icon to select a location on the map is a long strip. Does 50-300 Damage with a 3.25 blast radius. This killstreak can kill people inside of buildings!
Chopper Gunner
9 Kills to Activate
Purchase for C5000
+300 XP When Called in.
Around 6000 Health
AKA Huey. Allows you to control a mini gun in a chopper flying above the map. The mini gun has infinite ammo and will not overheat. Each round is an explosive round that does 40-120 damage in a 3.25 Meter radius. Lasts for 60 seconds. Although you’re controlling the man in the air, your body is still on the ground and can be killed. Pops flares and gives a warning to the player if a rocket is being locked on or shot at it. If shot down you are awarded 500 XP
Attack Dogs
11 Kills to Activate
Purchase for C6000
+350 XP When Called in.
Calls in a few dogs that will run throughout the map for 60 seconds. They will kill you in one hit by jumping on you. You can kill them by shooting them like any other player. Each dog has 100 health, just like a normal player. There can only be 4 dogs on the field at a time. If a dog is killed, it will be replaced by one of 4 “reserve” dogs. You are awarded 30XP for each dog you kill.
Gunship
11 Kills to Activate
Purchase for C6000
+350 XP When Called in.
Around 8000 Health.
AKA Hind. Allows you to control a gunship for 65 second. You have full control of the gunship’s movement and arsenal. Use RT/R1 to fire the mini gun with infinite rounds and LT/L1 to fire two rockets. The rockets take 5 seconds to reload after being shot. The mini gun does 40-140 damage within a 3.25 Meter Radius. The rockets give 100-150 damage within a 3.8 Meter Radius. The gunship pops flares and gives a warning to the player if a rocket is being locked on or shot at it. If shot down you are awarded 500 XP.