The following is a list of perks and their description:

Tier 1
PERK - DESCRIPTION
Sleight of Hand - Fast Reloading.
Pro - Fast Weapons Change.
Recon - Explosive damage shows target on mini-map.
Pro - Bullet damage shows target on mini-map.
Blind Eye - Air Support and Sentries are undetectable.
Pro - Fast lock-on for rockets. Increased bullet damage to vehicles.
Extreme Conditioning - Increased sprint time.
Pro - Climbing speed increased.
Scavenger - Get ammo from dead enemies.
Pro - Get more ammo.

Tier 2
PERK - DESCRIPTION
Quickdraw - Faster Aiming.
Pro - Faster recovery from using grenade/equipment.
Blast Shield - Increased explosive resistance.
Pro - Resistance to flashbangs and stuns.
Hardline - Killstreaks require one fewer kill.
Pro - Two assists count as kill towards killstreaks. Deathstreaks require one fewer death.
Assassin - Immunity to UAV, portable radar, thermal, and heartbeat.
Pro - Immunity to CUAV and EMP, no red crosshair or name over you.
Overkill - Carry two primary weapons.
Pro - Second primary can have two attachments.

Tier 3
PERK - DESCRIPTION
Marksman - Identify targets at more distant range.
Pro - Hold your breath for longer when sniping.
Stalker - Increased movement speed while aiming down the sites.
Pro - Add delay to enemy claymores before exploding.
SitRep - Detect Enemy Explosive and Tac Insert.
Pro - Opposing team’s footsteps make more noise.
Steady Aim - Increased accuracy while firing from hip.
Pro - Weapon ready more quickly after sprint.
Dead Silence - Quieter movement, recon does not work as well against you.
Pro - Do not take any fall damage.