COD:BO perks

First Tier

Faster Movement

Replenishes your ammunition and lethal grenades when you walk over blue scavenger bags that are dropped by dead players.

Undetectable by spy planes

Reduces explosive damage

Lowers kill streak requirement by one

Penetrate walls and objects with deeper bullet impact

Hold breath longer when scoped

Maintain increased accuracy when firing from the hip

Reload weapon faster

Equip two attachments to primary weapon (Excludes underbarrels))

Protect yourself from Nova Gas

Sprint for a longer duration

Move silently

Pull out your pistol before dying

Detect enemy equipment, explosives, and turrets