Perks in Call of Duty Ghosts are categized by type from speed to Elite. With over 30 perks to choose from you will find the standards like Marathon and Scavenger and some that have never been seen before like Takedown and Ping.
Speed

Ready Up
Weapon is ready faster after sprinting.
Unlocked: Default

Sleight of Hand
Faster reloading.
Unlocked: Level 8 Cost: 6 Squad Points

Agility
Increased movement speed.
Unlocked: Level 22 Cost: 6 Squad Points

Marathon
Unlimited Sprint.
Unlocked: Default

Stalker
Move faster while aiming.
Unlocked: Level 50 Cost: 9 Squad Points
Handling

Strong-Arm
Throw equipment farther, decrease the cook time of grenades and reset the fuse when throwing back explosives.
Unlocked: Level 2 Cost: 3 Squad Points

On the Go
Reload while sprinting.
Unlocked: Level 10 Cost: 3 Squad Points

Reflex
Swap weapons and use equipment faster.
Unlocked: Level 24 Cost: 6 Squad Points

Steady Aim
Increased hip fire accuracy.
Unlocked: Level 38 Cost: 6 Squad Points

Quickdraw
Faster aiming.
Unlocked: Default
Stealth

Takedown
Kill enemies without revealing their death locations.
Unlocked: Level 3 Cost: 3 Squad Points

Blind Eye
Undetectable by air support, Oracle systems, and sentries.
Unlocked: Level 12 Cost: 6 Squad Points

Dead Silence
Move silently, making you harder to detect. Players with Amplify can still hear your footsteps.
Unlocked: Level 26 Cost: 6 Squad Points

Incog
Resistant to targeting systems. No name, red crosshairs, or enemy call-outs when targeted.
Unlocked: Level 40 Cost: 9 Squad Points

Off the Grid
Undetectable on mini-map by SAT COM and radar pings.
Unlocked: Level 54 Cost: 9 Squad Points
Awareness

Recon
Enemies hit with explosives damage are tagged and can be seen through objects for a short time.
Unlocked: Level 4 Cost: 3 Squad Points

Scavenger
Resupply ammo from dead players.
Unlocked: Level 14 Cost: 6 Squad Points

SitRep
Detect enemy explosives and tactical equipment.
Unlocked: Level 28 Cost: 6 Squad Points

Amplify
Louder enemy footsteps make them easier to detect. Allows you to hear Dead Silence.
Unlocked: Level 42 Cost: 6 Squad Points

Wiretap
Utilize all active enemy and friendly SAT CAOMs on the field.
Unlocked: Level 56 Cost: 9 Squad Points
Resistance

Resilience
Take no damage from falling.
Unlocked: Level 5 Cost: 3 Squad Points

ICU
Regenerate health faster.
Unlocked: Level 16 Cost: 6 Squad Points

Focus
Reduced weapon sway when aiming down sights and reduced flinch when hit.
Unlocked: Level 30 Cost: 6 Squad Points

Tac Resist
Resistance to flash, stun, and EMP effects.
Unlocked: Level 44 Cost: 6 Squad Points

Blast Shield
Increased resistance to explosive damage.
Unlocked: Level 58 Cost: 6 Squad Points
Equipment

Extra Tactical
Additional Tactical equipment.
Unlocked: Default

Extra Lethal
Additional Lethal equipment.
Unlocked: Level 18 Cost: 6 Squad Points

Fully Loaded
Start with maximum ammo capacity.
Unlocked: Default

Extra Attachment
Extra attachment for your weapons.
Unlocked: Level 46 Cost: 9 Squad Points

Danger Close
Increased damage dealt with explosives.
Unlocked: Level 59 Cost: 12 Squad Points
Elite

Gambler
Spawn with a random Perk.
Unlocked: Level 7 Cost: 3 Squad Points

Hardline
Killstreaks require 1 less kill. Every 2 assists count as a kill toward you killstreak.
Unlocked: Level 20 Cost: 6 Squad Points

Ping
Activate a sonar ping upon killing an enemy, revealing nearby hostiles.
Unlocked: Level 34 Cost: 6 Squad Points

Overkill
Carry two primary weapons.
Unlocked: Level 48 Cost: 9 Squad Points

Deadeye
Consecutive kills increase the chance to deal more damage with bullet weapons.
Unlocked: Level 60 Cost: 15 Squad Points