343 Industries has released a list of Halo 4 Achievements you'll need to unlock to boost your Gamerscore. "Our primary goal when creating Halo 4's achievements was to reward milestones and increase replay value while balancing both difficulty and the breadth of game modes," the studio said. "Our secondary goal was to live up to Halo tradition with weird ass names for some of them (hello, The Dongblainer!). While you will only be able to speculate on the exact nature of some of these achievements, here's a peek at their very basic in-game descriptions." Needless to say, you should avert your eyes now if you want to avoid spoilers: Dawn: Complete Mission 1 on any difficulty - 10 points Requiem: Complete Mission 2 on any difficulty - 10 points Forerunner: Complete Mission 3 on any difficulty - 10 points Infinity: Complete Mission 4 on any difficulty - 10 points Reclaimer: Complete Mission 5 on any difficulty - 10 points Shutdown: Complete Mission 6 on any difficulty - 10 points Composer: Complete Mission 7 on any difficulty - 10 points Midnight: Complete Mission 8 on any difficulty - 10 points Wake up John: Complete the Campaign on Normal or harder - 20 points I Need a Hero: Complete the Campaign on Heroic or harder - 40 points The Legend of 117: Complete the Campaign on Legendary difficulty - 70 points Lone Wolf Legend: Complete the Campaign solo on Legendary difficulty - 90 points Skullduggery: Complete any Campaign mission with 3 or more Skulls on Heroic or harder - 15 points Bropocalypse: Complete any Campaign mission.