Hardline
Hardline makes the killstreaks require one less kills than they normally do. To get this perk to pro version you must complete the following:
- Share Packages – Share 10 Killstreak reward crates with teammates.
- Multiple Killstreaks – Earn 7 killstreaks in one match while using Hardline.
- Killstreak – Get 7 kills without dying in one match.
Lightweight
Lightweight is a perk that multiplies movement speed by 1.07.
- Escape Death - Escape death 5 times after being shot.
- Melee Kills - Get 15 melee kills.
- Offense Medal - Get 10 offense medals by killing enemies near their objectives
Scavenger
Scavenger allows the player to see and pick up ammo bags left by dead players. These bags replenish one magazine of ammunition for each weapon the player carries and one lethal grenade.
- Resupplies — Resupply 150 times while using Scavenger.
- Grenade Kills — Get 5 Lethal Grenade kills with a resupplied lethal grenade.
- Kill Count — Get 5 kills without dying, 5 times.
Ghost
Ghost prevents players from being shown on radar while an enemy spy plane is in the air.
- Concealed Kills – Kill 20 enemies while they have a Spy Plane or Blackbird active.
- Destroy Aircraft – Destroy 30 aircraft with any non-Killstreak launcher.
- Destroy Sentry Gun – Destroy 1 Sentry Gun.
Flak Jacket
Flak Jacket reduces all incoming explosive damage to 35% of its original value (9% in hardcore game modes). In addition, non-direct impact explosives will never deal more than 75 damage (22.5 in hardcore game modes); this means that a player at full health will not be killed by many explosives.
- Protected – Survive 10 explosions while using Flak Jacket.
- Demolished – Plant or defuse 10 bombs in Demolition, Sabotage, or Search & Destroy.
- Throwbacks – Throw back 5 enemy Frag grenades.
Hardened
It is just like FMJ (full metal jacket) but in a perk.
- Penetration Kills - Get 10 kills using Hardened and shooting through walls.
- Bullets in Aircraft - Shoot 200 bullets into enemy aircraft.
- Equipment Shot - Destroy 1 piece of enemy equipment through a wall.
Scout
Scout doubles the hold breath time for scoped weapons, allowing 8 seconds of no idle sway.
- Secondary Kills — Get 50 kills with secondary weapons.
- One Shot Kills — Get 50 One Shot, One Kill medals.
- Headshots — Get 30 headshot kills.
Steady Aim
Steady Aim reduces the size of the hipfire cross-hairs to 65% of their original size.
- Quick Melee – Melee two enemies consecutively within 5 seconds.
- Sprint Kills – Get 100 kills after sprinting.
- Hip Fire Kills – Get 150 hip fire kills using Steady Aim.
Sleight of hand
Sleight of Hand decreases the reload time for all weapons by 50%.
- Aiming Kills: Get 150 kills when aiming down sights.
- Reload Kills: Kill an enemy within 5 seconds of reloading 30 times.
- Fast Hands Kills: Reload and finish off the enemy you wounded 10 times.
Warlord
Warlord allows the player to have two attachments on the player's primary weapon.
- Two Attachment Kills - Get 150 kills with a weapon with 2 attachments.
- Grenade Kills - Get 10 frag or semtex kills.
- Grenade Multi-Kills - Get a multi-kill with a fragmentation grenade or Semtex.
Marathon
Marathon doubles the player's sprint duration. Its Pro version gives the player unlimited sprint duration.
- 26 Miles: Sprint 26 Miles using Marathon.
- First Blood: Get the First Blood Medal 10 times.
- Captures: In Capture the Flag, get the Flag Capture medal 15 times while using Marathon.
Ninja
Ninja reduces all player noise by 75%. Its pro version completely silences the player and doubles the volume of enemy sounds. Teammates without Ninja will be heard normally by the player.
- Silenced Kills – Get 150 kills using the Suppressor attachment.
- Back Stabs – Get 5 Backstabber Medals.
- Plants – Plant the bomb 10 times in demolition, sabotage, or search & destroy.
Second chance
Second Chance returns in Black Ops. When a player is shot down and has Second Chance equipped, the player falls as if they actually died, then goes into second chance.
- Kills — Get 10 kills while in Second Chance.
- Revenge — While in Second Chance, kill the enemy who downed you 5 times.
- Headshot — Get a headshot kill while in Second Chance.
Hacker
Hacker makes all enemy equipment, sentry guns, and SAM turrets glow bright red. It does not do this for tactical insertions. The glow is visible through all surfaces and from any distance.
- Destroys – Destroy 10 equipment or explosives while using Hacker.
- Explosive Kills – Kill 25 enemies with a claymore or C4.
- Near Equipment Kills – Kill 25 enemies within the radius of your jammer or motion sensor.
Tactical Mask
Tactical Mask renders the player immune to the effects of nova gas.
- Flash Kills — Kill 20 enemies that are blinded by your Flashbang.
- Concussion Kills — Kill 20 enemies that are stunned by your Concussion Grenade.
- Nova Gas Kills — Kill 20 enemies poisoned by your Nova Gas.