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.