PERK 1
Lightweight
Ability: Allows you to move faster
Pro Ability: No falling damage.
SCAVENGER
Ability: Replenishes your ammunition and lethal grenades when you walk over blue scavenger bags that are dropped by dead players. This won't resupply launchers or equipment.
Pro Ability: Doubles your starting ammo with extra magazines. This also replenishes your tactical grenades.
GHOST
Ability: You are undetectable by the Spy Plane but you still show up on the radar if you fire a weapon that doesn't have a silencer.
Pro Ability: Undetectable by aircraft, infrared and sentries. Enemies won't see your name or a red crosshair when targeting you.
FLAK JACKET
Ability: Reduces explosive damage and allows you to survive any indirect explosive attack. Crossbow bolts are lethal if they get stuck on you and explode.
Pro Ability: Deflects fire damage and allows you to reset the fuse of a thrown grenade when you pick it up.
HARDLINE
Ability: Reduces the amount of kills for any killstreak by one.
Pro Ability: Allows you to change your Care Package when it drops.
PERK 2
HARDEND
Ability: Increases your weapons bullet penetration, but it doesn't increase bullet damage.
Pro Ability: Your weapons do extra damage to aircraft and turrets. This also reduces flinch when you are shot by someone
SCOUT
Ability: Enables you to hold your breath longer when steadying a weapons scope.
Pro Ability: Allows you to switch your weapon faster.
STEADY AIM
Ability: Steady Aim increases a weapons hip fire accuracy and also reduces shotgun spread.
Pro Ability: This enables you to aim faster after sprinting and recover faster from a knife lunge.
SLIGHT OF HAND
Ability: Gives a faster reload time by reducing your weapons reload time in half.
Pro Ability: Allows you to aim down the sight ~50% faster than normal. This doesn't work with weapons that have scopes.
WARLORD
Ability: Warlord allows you to put 2 attachments to your primary weapon.
Pro Ability: You start with one extra lethal and tactical grenade, except smoke (WILLY PETE).
PERK 3
TACTICAL MASK
Ability: Protects you against NOVA GAS.
Pro Ability: Tactical Mask Pro reduces the effects of flashbangs and concussion grenades, it also reveals the position of a flashed or stunned enemy.
MARATHON
Ability: This extends your sprint time, but it doesn't increase your speed.
Pro Ability: Gives you unlimited sprint.
NINJA
Ability: Ninja allows you to walk, sprint and jump almost silently, therefore you can sneak behind enemies more easily.
Pro Ability: When you have this equipped enemies will be louder, it also makes you completely silent.
SECOND CHANCE
Ability: Gives you the ability to survive a normal death by dropping you to the ground. You can use your pistol to defend yourself from enemies. Second Chance ends after 10 seconds or if you take a single hit from the enemy.
Pro Ability: If you have Second Chance Pro equipped you can survive a little longer than normal. Teammates can also revive you - even players that don't have Second Chance. You can see a white REVIVE tag above a player that can be revived.
HACKER
Ability: Allows you to see enemy explosives, equipment and Tactical Insertions. This highlights them with a red color.
Pro Ability: Hacker Pro allows you to sabotage enemy Care Packages and also turn enemy equipment friendly. This also makes you invisible to Motion Sensors.