| Name | Description | Points |
| 1. Landfall | Finish the first mission of the Campaign on Normal, Heroic, or Legendary. | 20 Points |
| 2. Holdout | Finish the second mission of the Campaign on Normal, Heroic, or Legendary. | 20 Points |
| 3. The Road | Finish the third mission of the Campaign on Normal, Heroic, or Legendary. | 20 Points |
| 4. Assault | Finish the fourth mission of the Campaign on Normal, Heroic, or Legendary. | 30 Points |
| 5. Cleansing | Finish the fifth mission of the Campaign on Normal, Heroic, or Legendary. | 30 Points |
| 6. Refuge | Finish the sixth mission of the Campaign on Normal, Heroic, or Legendary. | 30 Points |
| 7. Last Stand | Finish the seventh mission of the Campaign on Normal, Heroic, or Legendary. | 40 Points |
| 8. The Key | Finish the eighth mission of the Campaign on Normal, Heroic, or Legendary. | 40 Points |
| 9. Return | Finish the final mission of the Campaign on Normal, Heroic, or Legendary. | 50 Points |
| 10. Campaign Complete: Normal | Finish the Campaign on Normal. | 125 Points |
| 11. Campaign Complete: Heroic | Finish the Campaign on Heroic (unlocks achievement for Normal, if not earned). | 125 Points |
| 12. Campaign Complete: Legendary | Finish the Campaign on Legendary (unlocks achievements for Normal and Heroic, if not earned). | 125 Points |
| 13. Iron | Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. | 10 Points |
| 14. Black Eye | Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. | 10 Points |
| 15. Tough Luck | Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. | 10 Points |
| 16. Catch | Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. | 10 Points |
| 17. Fog | Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. | 10 Points |
| 18. Famine | Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. | 10 Points |
| 19. Thunderstorm | Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. | 10 Points |
| 20. Tilt | Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. | 10 Points |
| 21. Mythic | Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. | 10 Points |
| 22. Spartan Program Recruit | Win your first game in matchmaking to sign up for the Spartan Program (Online). | 10 Points |
| 23. UNSC Spartan | Earn your Sergeant rating to be recognized as a true Spartan (Online). | 15 Points |
| 24. Spartan Officer | Advance to the Spartan Officer ranks (Online). | 25 Points |
| 25. Two for One | Score a Double Kill with a single spartan laser shot in a ranked free for all playlist (Online). | 5 Points |
| 26. Too Close to the Sun | Destroy an enemy banshee with the spartan laser or missile pod in a ranked playlist or in campaign. | 5 Points |
| 27. Triple Kill | Kill 3 enemies within 4 seconds of one another in a ranked free for all playlist (Online). | 5 Points |
| 28. Overkill | Kill 4 enemies within 4 seconds of one another in a ranked free for all playlist (Online). | 5 Points |
| 29. Lee R Wilson Memorial | Score 5 grenade sticks in any ranked free for all playlist (Online). | 5 Points |
| 30. We're in for some Chop | Destroy an enemy vehicle with equipment in a ranked playlist or in campaign. | 5 Points |
| 31. Killing Frenzy | Kill 10 enemies without dying in any ranked free for all playlist (Online). | 5 Points |
| 32. Steppin' Razor | Score a Triple Kill with the sword in a ranked free for all playlist (Online). | 5 Points |
| 33. Mongoose Mowdown | Splatter an enemy with the mongoose in a ranked free for all playlist (Online). | 5 Points |
| 34. Up Close and Personal | Kill 5 enemies by melee or assassination in a ranked free for all playlist (Online). | 5 Points |
| 35. Fear the Pink Mist | Kill 5 enemies with the needler in a ranked free for all playlist or in campaign. | 5 Points |
| 36. Headshot Honcho | Kill 10 enemies with headshots in a ranked free for all playlist or in campaign. | 5 Points |
| 37. Used Car Salesman | Destroy a vehicle that has three enemies in it in a ranked playlist or in campaign. | 5 Points |
| 38. Marathon Man | Locate and access all Terminals in the Campaign. | 40 Points |
| 39. MVP |
Earn the MVP in any ranked playlist (Online). | 5 Points |
| 40. Maybe Next Time Buddy | Board the same vehicle within 10 seconds after being boarded in any free for all playlist (Online). | 5 Points |
| 41. Demon | Score over Points in the Campaign meta-game on the second mission. | 10 Points |
| 42. Guerilla | Score over Points in the Campaign meta-game on the first mission. | 10 Points |
| 43. Cavalier | Score over Points in the Campaign meta-game on the third mission. | 10 Points |
| 44. Askar | Score over Points in the Campaign meta-game on the fourth mission. | 10 Points |
| 45. Exterminator | Score over Points in the Campaign meta-game on the fifth mission. | 10 Points |
| 46. Ranger | Score over Points in the Campaign meta-game on the sixth mission. | 10 Points |
| 47. Vanguard | Score over Points in the Campaign meta-game on the seventh mission. | 10 Points |
| 48. Orpheus | Score over Points in the Campaign meta-game on eighth mission. | 10 Points |
| 49. Reclaimer | Score over Points in the Campaign meta-game on the final mission. | 10 Points |
