Halo 4 Weekly Challenges: 3.18.13CampaignPrediction: Pain 10000 XP
Complete any Campaign Mission on Heroic or higher difficulty with the Famine, Luck and Thunderstorm skulls.Infinity and Beyond 30000 XP
Complete Infinity on Legendary difficulty with the Mythic, Tilt, Tough Luck and Thunderstorm skulls.Spartan OpsI am the 99 percent - 10000 XP
Kill 20 Elites.Destroyer of Grunts - 20000 XP
Kill 140 Grunts.War GamesDead Eye - 10000 XP
Kill 100 Players with a headshotOne, Two, Three, Four...
Earn 40 Multikill medals.Click here to see a complete list of this week's Weekly Challenges.