How to unlock all Modern Warfare 2 perks: New MW2 perk system

A new perk system is being introduced into Modern Warfare 2. Here
A new perk system is being introduced into Modern Warfare 2. Here's how the new system works and all the perks you can get.

How to unlock all Modern Warfare 2 perks: New MW2 perk system explained - Dexerto

How to unlock all Modern Warfare 2 perks: New MW2 perk system explained - Dexerto

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All Modern Warfare 2 perks, packages, and how the new system works