Call of Duty: Modern Warfare 3has eight sets of weekly challenges planned for its first season. Each week, a new series of challenges will become available for core Multiplayer, Zombies, and Warzone. Completing any five of these challenges will unlock a unique Aftermarket part, attachment, or even a new weapon. Unlocking all eight weekly challenge rewards will also grant an exclusive weapon camo, so completions and camo grinders alike will want to complete as many challenges as possible.

The first set of weekly challenges for Season 1 are quite easy, encouraging you to use the MCW, battle rifles, and marksman rifles across all three game types. This short guide will showcase every challenge added this week, their XP payouts, and briefly showcase the challenge reward.

Modern Warfare 3 Rival-9 Headhunter Carbine Conversion Kit Preview

This guide assumes you understand how the weekly challenge system works. Consult ourweekly challenges guidefor an overview of how this system works in Modern Warfare 3.

All listed challenges and rewards will be available until the end of Season 1.

Modern Warfare 3 Oeprator Aiming Weapon Behind Cover

Week 1 Challenge Reward

Completing five challenges this week will award theJAK Headhunter Carbine Conversion Kit,transformingthe Rival-9 SMGinto a three-round burst rifle. The attachment increases the weapon’s base damage to 33 per shot, extends its minimum damage falloff by 25%, and greatly reduces the Rival-9’s recoil. All of these benefits come at the cost of handling stats and the Rival-9’s fire rate.

2,500 XP

Get 30 kills while aiming down sights (ADS) with the MCW.

Modern Warfare 3 Zombies Squad Outside Of Aether Portal

5,000 XP

Land 20 headshot kills with recommended marksman rifles or battle rifles.

Modern Warfare 3 Warzone Squad Driving Away From Helicopter-1

Kill 20 enemies with sights equipped on a recommended battle rifle.

7,500 XP

Get 3 kills without dying 3 times with recommended marksman rifles.

10,000 XP

Open 50 chests or containers that grant loot.

In Urzikstan, get 10 operator kills in the north-west region (Resort, Power, Seaport, Cargo).

In Urzikstan, get 10 operator kills in the southern region (City, Suburbs, Manor).

Complete 15 contracts in Warzone.

In Urzikstan, get 10 operator kills in the eastern region (Military Base or Farms).

In Urzikstan, get 10 operator kills in the central region (Old Town, Low Town).