- Lone Wolf Legend
Completed the Campaign solo on Legendary difficulty.
20 May 2013 - 10 guides
- Dedicated to Crimson
Completed all chapters in any 5 episodes of Spartan Ops on any difficulty.
06 December 2012 - 3 guides
- What Power Outage?
Completed Chapter 4, Episode 5 of Spartan Ops without losing a generator on Heroic or harder.
05 December 2012 - 7 guides
- No Easy Way Out
In Ch 1, Ep 5 of Spartan Ops survived the enemy assault during the defense on Normal or harder.
05 December 2012 - 9 guides
- Mortardom
Stole a Wraith and used it to kill at least four enemy Wraiths in mission 5 on Heroic or harder.
30 November 2012 - 14 guides
- The Challenger
Completed 25 Challenges.
16 November 2012 - 4 guides
- No One Left Behind
Saved at least one Marine in Chapter 3 of Episode 2 of Spartan Ops on Heroic or harder.
15 November 2012 - 6 guides
- Bros to the Close
Completed mission 4 without one preventable Marine death on Heroic or harder.
10 November 2012 - 10 guides
- This is my Rifle, This is my Gun
Carried a UNSC weapon all the way through mission 3 on Heroic or harder.
10 November 2012 - 9 guides
- Hanging on the Combat Deck
Won 20 War Games matchmaking matches.
08 November 2012 - 2 guides
- Movin' On Up
Ranked up your Spartan-IV to SR-20.
08 November 2012 - 6 guides
- Crimson Alone
Completed a Spartan Ops chapter solo on Legendary.
07 November 2012 - 6 guides
- I <3 Red vs Blue
Won 5 War Games matchmaking matches.
07 November 2012 - 3 guides
- What a Poser!
Changed your Spartan's pose in the Spartan ID card.
07 November 2012 - 5 guides
- Midnight Launch
Got significant air in the Warthog at midnight in mission 2.
Unlocked offline - 15 guides
- A Legendary Episode
Completed all chapters in Spartan Ops Episode 1 on Legendary difficulty.
06 November 2012 - 2 guides
- The Challenged
Completed a Challenge.
06 November 2012 - 3 guides
- Roses vs Violets
Found one of the RvB Easter Eggs in Episodes 1 to 5 of Spartan Ops.
06 November 2012 - 11 guides
- Knight in White Assassination
Assassinated a Knight in any Spartan Ops mission.
06 November 2012 - 7 guides
- Not Some Recruit Anymore
Ranked up your Spartan-IV to SR-5.
06 November 2012 - 4 guides
- Operation Completion
Completed a Spartan Ops Mission on any difficulty.
- Sharing is Caring
Uploaded a File to your File Share.
06 November 2012 - 4 guides
- The Director
Saved a Film Clip from the Theater.
06 November 2012 - 3 guides
- Snapshot!
Saved a Screenshot from the Theater.
06 November 2012 - 2 guides
- The Cartographer
Created and saved a Custom Map in Forge.
06 November 2012 - 3 guides
- Game Changer
Created and saved a Custom Game type in War Games.
06 November 2012 - 4 guides
- Give Him the Stick
Took out both Hunters using only the Sticky Detonator in mission 7.
06 November 2012 - 8 guides
- Chief, Smash!
Killed 3 Crawlers in one hit with the Gravity Hammer in mission 8.
06 November 2012 - 11 guides
- Armorer
Changed your Spartan's armor in the Spartan Armor card.
06 November 2012 - 4 guides
- Badge
Changed your Emblem in the Spartan ID card.
06 November 2012 - 4 guides
- Bromageddon
Completed the Campaign cooperatively on Heroic or harder.
06 November 2012 - 2 guides
- The Legend of 117
Completed the Campaign on Legendary difficulty.
06 November 2012 - 3 guides
- I Need a Hero
Completed the Campaign on Heroic or harder.
06 November 2012 - 4 guides
- Wake Up, John
Completed the Campaign on Normal or harder.
06 November 2012 - 3 guides
- Midnight
Completed mission 8 on any difficulty.
- Terminus
Found all of the Terminals in the Campaign.
06 November 2012 - 5 guides
- Composer
Completed mission 7 on any difficulty.
- Shutdown
Completed mission 6 on any difficulty.
06 November 2012 - 3 guides
- Explore the Floor
Tricked or forced a Hunter to fall to his demise in mission 6.
06 November 2012 - 19 guides
- Reclaimer
Completed mission 5 on any difficulty.
06 November 2012 - 2 guides
- Infinity
Completed mission 4 on any difficulty.
06 November 2012 - 2 guides
- Forerunner
Completed mission 3 on any difficulty.
- Requiem
Completed mission 2 on any difficulty.
- Contact the Domain
Found a Terminal in the Campaign.
06 November 2012 - 3 guides
- Bropocalypse
Completed any Campaign mission cooperatively on Heroic or harder.
- Skullduggery
Completed any Campaign mission with 3 or more Skulls on Heroic or harder.
06 November 2012 - 3 guides
- Dawn
Completed mission 1 on any difficulty.
06 November 2012 - 3 guides
- Digging up the Past
Found and accessed Chief's record in mission 1.
06 November 2012 - 14 guides
- PWND
Changed your Service Tag in the Spartan ID card.
06 November 2012 - 5 guides