Perks are abilities - passive or active - that allow your character to learn new skills or become a better soldier (by increasing your damage or mobility, for example).
They can be unlocked in the Skills tab of the in-game menu.
Each Perk can be unlocked with Skill Points, usually collected by gaining experience levels and completing various objectives in-game.
You can equip the available active perks in the Loadout tab of the in-game menu.
Active perks can be distinguished in the Skills Tree as these perks will have a backpack icon and the following description: Equip this Perk to get this effect.
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