10 BropocalypseCompleted any Campaign mission cooperatively on Heroic or harder.
10 ComposerCompleted mission 7 on any difficulty.
10 Contact the DomainFound a Terminal in the Campaign.
10 DawnCompleted mission 1 on any difficulty.
10 ForerunnerCompleted mission 3 on any difficulty.
10 InfinityCompleted mission 4 on any difficulty.
10 MidnightCompleted mission 8 on any difficulty.
10 ReclaimerCompleted mission 5 on any difficulty.
10 RequiemCompleted mission 2 on any difficulty.
10 ShutdownCompleted mission 6 on any difficulty.
10 The ChallengedCompleted a Challenge.
15 I <3 Red vs BlueWon 5 War Games matchmaking matches.
15 Not Some Recruit AnymoreRanked up your Spartan-IV to SR-5.
15 Operation CompletionCompleted a Spartan Ops Mission on any difficulty.
15 SkullduggeryCompleted any Campaign mission with 3 or more Skulls on Heroic or harder.
20 No One Left BehindSaved at least one Marine in Chapter 3 of Episode 2 of Spartan Ops on Heroic or harder.
20 Bros to the CloseCompleted mission 4 without one preventable Marine death on Heroic or harder.
20 Chief, Smash!Killed 3 Crawlers in one hit with the Gravity Hammer in mission 8.
20 Crimson AloneCompleted a Spartan Ops chapter solo on Legendary.
20 Digging up the PastFound and accessed Chief's record in mission 1.
20 Explore the FloorTricked or forced a Hunter to fall to his demise in mission 6.
20 Give Him the StickTook out both Hunters using only the Sticky Detonator in mission 7.
20 Knight in White AssassinationAssassinated a Knight in any Spartan Ops mission.
20 Midnight LaunchGot significant air in the Warthog at midnight in mission 2.
20 MortardomHijacked a Wraith and used it to kill at least four enemy Wraiths in mission 5 on Heroic or harder.
20 No Easy Way OutIn Ch 1, Ep 5 of Spartan Ops survived the enemy assault during the defense on Normal or harder.
20 Roses vs VioletsFound one of the RvB Easter Eggs in Spartan Ops.
20 The ChallengerCompleted 25 Challenges.
20 This is my Rifle, This is my GunCarried a UNSC weapon all the way through mission 3 on Heroic or harder.
20 Wake Up, JohnCompleted the Campaign on Normal or harder.
20 What Power Outage?Completed Chapter 4, Episode 5 of Spartan Ops without losing a generator on Heroic or harder.
25 Movin' On UpRanked up your Spartan-IV to SR-20.
30 Hanging on the Combat DeckWon 20 War Games matchmaking matches.
40 A Legendary EpisodeCompleted all chapters in Spartan Ops Episode 1 on Legendary difficulty.
40 BromageddonCompleted the Campaign cooperatively on Heroic or harder.
40 I Need a HeroCompleted the Campaign on Heroic or harder.
5 ArmorerChanged your Spartan's armor in the Spartan Armor card.
5 BadgeChanged your Emblem in the Spartan ID card.
5 Game ChangerCreated and saved a Custom Game type in War Games.
5 PWNDChanged your Service Tag in the Spartan ID card.
5 Sharing is CaringUploaded a File to your File Share.
5 Snapshot!Saved a Screenshot from the Theater.
5 The CartographerCreated and saved a Custom Map in Forge.
5 The DirectorSaved a Film Clip from the Theater.
5 What a Poser!Changed your Spartan's pose in the Spartan ID card.
50 TerminusFound all of the Terminals in the Campaign.
70 The Legend of 117Completed the Campaign on Legendary difficulty.
80 Dedicated to CrimsonCompleted all chapters in the first 5 episodes of Spartan Ops on any difficulty.
90 Lone Wolf LegendCompleted the Campaign solo on Legendary difficulty.