| Unlockable: | How to unlock: |
| A Legendary Episode (40) | Completed all chapters in Spartan Ops Episode 1 on Legendary difficulty. |
| Armorer (5) | Changed your Spartan's armor in the Spartan Armor card. |
| Badge (5) | Changed your Emblem in the Spartan ID card. |
| Bromageddon (40) | Completed the Campaign cooperatively on Heroic or harder. |
| Bropocalypse (10) | Completed any Campaign mission cooperatively on Heroic or harder. |
| Bros to the Close (20) | Completed mission 4 without one preventable Marine death on Heroic or harder. |
| Chief, Smash! (20) | Killed 3 Crawlers in one hit with the Gravity Hammer in mission 8. |
| Composer (10) | Completed mission 7 on any difficulty. |
| Contact the Domain (10) | Found a Terminal in the Campaign. |
| Crimson Alone (20) | Completed a Spartan Ops chapter solo on Legendary. |
| Dawn (10) | Completed mission 1 on any difficulty. |
| Dedicated to Crimson (80) | Completed all chapters in the first 5 episodes of Spartan Ops on any difficulty. |
| Digging up the Past (20) | Found and accessed Chief's record in mission 1. |
| Explore the Floor (20) | Tricked or forced a Hunter to fall to his demise in mission 6. |
| Forerunner (10) | Completed mission 3 on any difficulty. |
| Game Changer (5) | Created and saved a Custom Game type in War Games. |
| Give Him the Stick (20) | Took out both Hunters using only the Sticky Detonator in mission 7. |
| Hanging on the Combat Deck (30) | Won 20 War Games matchmaking matches. |
| I <3 Red vs Blue (15) | Won 5 War Games matchmaking matches. |
| I Need a Hero (40) | Completed the Campaign on Heroic or harder. |
| Infinity (10) | Completed mission 4 on any difficulty. |
| Knight in White Assassination (20) | Assassinated a Knight in any Spartan Ops mission. |
| Lone Wolf Legend (90) | Completed the Campaign solo on Legendary difficulty. |
| Midnight (10) | Completed mission 8 on any difficulty. |
| Midnight Launch (20) | Got significant air in the Warthog at midnight in mission 2. |
| Mortardom (20) | Hijacked a Wraith and used it to kill at least four enemy Wraiths in mission 5 on Heroic or harder. |
| Movin' On Up (25) | Ranked up your Spartan-IV to SR-20. |
| No Easy Way Out (20) | In Ch 1, Ep 5 of Spartan Ops survived the enemy assault during the defense on Normal or harder. |
| No One Left Behind (20) | Saved at least one Marine in Chapter 3 of Episode 2 of Spartan Ops on Heroic or harder. |
| Not Some Recruit Anymore (15) | Ranked up your Spartan-IV to SR-5. |
| Operation Completion (15) | Completed a Spartan Ops Mission on any difficulty. |
| PWND (5) | Changed your Service Tag in the Spartan ID card. |
| Reclaimer (10) | Completed mission 5 on any difficulty. |
| Requiem (10) | Completed mission 2 on any difficulty. |
| Roses vs Violets (20) | Found one of the RvB Easter Eggs in Spartan Ops. |
| Sharing is Caring (5) | Uploaded a File to your File Share. |
| Shutdown (10) | Completed mission 6 on any difficulty. |
| Skullduggery (15) | Completed any Campaign mission with 3 or more Skulls on Heroic or harder. |
| Snapshot! (5) | Saved a Screenshot from the Theater. |
| Terminus (50) | Found all of the Terminals in the Campaign. |
| The Cartographer (5) | Created and saved a Custom Map in Forge. |
| The Challenged (10) | Completed a Challenge. |
| The Challenger (20) | Completed 25 Challenges. |
| The Director (5) | Saved a Film Clip from the Theater. |
| The Legend of 117 (70) | Completed the Campaign on Legendary difficulty. |
| This is my Rifle, This is my Gun (20) | Carried a UNSC weapon all the way through mission 3 on Heroic or harder. |
| Wake Up, John (20) | Completed the Campaign on Normal or harder. |
| What a Poser! (5) | Changed your Spartan's pose in the Spartan ID card. |
| What Power Outage? (20) | Completed Chapter 4, Episode 5 of Spartan Ops without losing a generator on Heroic or harder. |
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