Perk #1

Marathon - Unlimited Sprint.     Pro - Climb obstacles faster.
Sleight of Hand - Faster Reloading.    Pro - Faster Aiming.
Scavenger - Resupply from dead enemies.   Pro - Extra Mags.
Bling - 2 Primary weapon attachments.   Pro - 2 Secondary weapons attachments.
One Man Army -Replaces your secondary weapon.   Pro - 2 Secondary weapons attachments.
This allows you to change your class at any time.

Perk #2

Stopping Power - Increased bullet damage.   Pro - Increased damage vs. vehicles.
Lightweight - Move Faster.     Pro - Quicker aiming after sprinting.
Clod Blooded - Undetectable by UAV, air support,  Pro - No red crosshair or name shown when you are targeted.
Sentry Guns, and thermal
Danger Close -Increases explosive damage.
  Pro - Increases air support damage.

Perk #3

Cammando - Increased melee distance.    Pro - No falling damage.
Steady Aim - Increased hip-fire accuracy.   Pro - Longer breath for steadier sniper shots.
Scrambler - Jam enemy radar near you.    Pro - Delay enemy claymore explosions.
Ninja - Invisible to heartbeat sensors.    Pro - Increased damage vs. vehicles.
SitRep - This will reveal enemy devices.   Pro - Increased damage vs. vehicles.
Last Stand - Allows you to survive a normal death.  Pro - Allows you to use equitment, while in last stand.
You will drop to the ground and pull out your pistol.

Death Perks

Painkiller - Big health boost when you spawn (3 deaths without a kill).
Copy Cat - Steal your killer's class in killcam (4 deaths without a kill)).
Martyrdom - Drop a live grenade just after dying (4 deaths without a kill).
Final Stand - Get back up after being wounded. (4 deaths without a kill)