dark_prinny
Banned
Each of the 35 available Perks is weighted with a point value of 1 through 5. Your loadouts naturally have a pool of 8 points to spend on Perks, up to a total of 12 depending on your loadout choices.
In addition to the initial 8 points, a single Perk point is tied to the Primary Weapon slot, Secondary Weapon slot, Lethal and Tactical. Take away any one of these items for an additional Perk point, allowing a maximum of 12 points to spend. If youre a Perk fanatic, youre welcome to forego all weapons and equipment, starting each spawn with only a knife in hand and 12 points worth of Perks. Its your choice.
Perk Categories:
Speed
Outrun and outmaneuver enemy players. Speed Perks are all about getting the lead and staying ahead. Examples include:
Sleight of Hand: Faster reloading.
Stalker: Move faster while aiming.
Handling
Dexterity and control drives the Handling Perks, improving actions and accuracy. Examples include:
On the Go: Reload while sprinting.
Steady Aim: Increased hip fire accuracy.
Stealth
Stealth Perks aid you in staying out of sight, maintaining a low profile and engaging on your terms. Examples include:
Takedown: Kill enemies without revealing their death locations.
Incog: Resistant to targeting systems including: Recon, Thermal Scope, Tracker Sight and Motion Sensor. No name or red crosshairs when targeted.
Awareness
Keep in tune with your surroundings. Awareness Perks help you survey the environment and detect enemy players. Examples include:
SitRep: Detect enemy explosives and tactical equipment.
Wiretap: Utilize all active enemy and friendly SAT COMs on the field.
Resistance
A hardened endurance reduces the effects of fatigue. Resistance Perks keep you going through tough engagements. Examples include:
Focus: Reduced weapon sway when aiming down sights and reduced flinch when hit.
Blast Shield: Increased resistance to explosive damage.
Equipment
Tacticians swear by their gear, and Equipment Perks ensure you have the best tools on hand.
Elite
Elite Perks offer special abilities that affect your loadouts in a variety of ways. Examples include:
Gambler: Spawn with a random Perk.
Ping: Activate a sonar ping upon killing an enemy, revealing nearby hostiles.
SOURCE: http://community.callofduty.com/com.../call-of-duty-ghosts-intel-perks#.UnDw9Hm9LCT
Perk unlock levels:
Lvl. 1 = Ready Up
Lvl. 2 = Strong Arm
Lvl. 3 = Takedown
Lvl. 4 = Recon
Lvl. 5 = Resilience
Lvl. 6 = Extra Tactical
Lvl. 7 = Gambler
Lvl. 8 = Sleight of Hand
Lvl. 10 = On The Go
Lvl. 12 = Blind Eye
Lvl. 14 = Scavenger
Lvl. 16 = ICU
Lvl. 18 = Extra Lethal
Lvl. 20 = Hardline
Lvl. 22 = Agility
Lvl. 24 = Reflex
Lvl. 26 = Dead Silence
Lvl. 28 = Amplify
Lvl. 30 = Focus
Lvl. 32 = Fully Loaded
Lvl. 34 = Ping
Lvl. 36 = Marathon
Lvl. 38 = Steady Aim
Lvl. 40 = Incog
Lvl. 42 = SitRep
Lvl. 44 = Tac Resist
Lvl. 46 = Extra Attachment
Lvl. 48 = Overkill
Lvl. 50 = Stalker
Lvl. 52 = Quickdraw
Lvl. 54 = Off The Grid
Lvl. 56 = Wiretap
Lvl. 58 = Blast Shield
Lvl. 59 = Danger Close
Lvl. 60 = Deadeye