Special Perks

Special Perks appear only in Call of Duty Modern Warfare XX and are a fourth modifier to your class. To unlock them you must complete challenges.

Blood Rage
This perk raises your damage by 40% and hip fire accuracy by 10% when you're severely hurt, but you can't aim down your sights.

Challenges:
 * Get 300 kills using Hardline.
 * Get 75 kills while in Second Chance.
 * Get 50 kills while you're severely hurt.
 * Get a 15 kill streak.

Adrenaline Rush
This perk increases your sprint speed by 15% when you're severely hurt.

Challenges:
 * Get 50 knife kills when sprinting.
 * Get 25 kills when tossing grenades.
 * Get 100 kills with Lightweight equipped with Marathon.

One Man Army
This perk allows you to change class in-game.

Challenges:
 * Get 200 kills with all tier 1 perks.
 * Get 50 kills with SMG, Pistols, Assault Rifles, Light Machine Guns and Sniper Rifles.

Scuba Gear
This perk allows you to go underwater in multiplayer maps that have water terrains.

Challenges:
 * Get 100 kills by behind of your opponents.
 * Get 100 kills using Ghost equipping Shadow Man.
 * Get 100 headshots.

Jugg Walk
This perk increases your accuracy but decreases your speed as you will be walking like a juggernaut. This perk can only be equipped with Juggernaut. Increases your accuracy by 50%.

Challenges:
 * Get 200 kills with Juggernaut.

Supply Commander
This perk allow players to share part of their ammo with teammates. It's use is better on a Scavenger player.

Challenges:
 * Get 50 grenade kills.
 * Resupply 100 times in one match.
 * Stun 100 enemies.
 * Get 25 claymore kills.
 * Get 40 C4 kills.