|
| Spartan Officer |
| Advance to the Spartan Officer ranks (Online). |
Score: 25  |
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| Overkill |
| Kill 4 enemies within 4 seconds of one another in a ranked free for all playlist (Online). |
| Score: 5 |
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| Maybe Next Time Buddy |
| Board the same vehicle within 10 seconds after being boarded in any free for all playlist (Online). |
| Score: 5 |
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| Marathon Man |
| Locate and access all Terminals in the Campaign. |
| Score: 40 |
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| Reclaimer |
| Score over 15,000 points in the Campaign meta-game on the final mission. |
| Score: 10 |
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| Orpheus |
| Score over 15,000 points in the Campaign meta-game on the eighth mission. |
| Score: 10 |
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| Vanguard |
| Score over 50,000 points in the Campaign meta-game on the seventh mission. |
| Score: 10 |
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| Ranger |
| Score over 50,000 points in the Campaign meta-game on the sixth mission. |
| Score: 10 |
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| Exterminator |
| Score over 15,000 points in the Campaign meta-game on the fifth mission. |
| Score: 10 |
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| Two for One |
| Score a Double Kill with a single spartan laser shot in a ranked free for all playlist (Online). |
| Score: 5 |
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| UNSC Spartan |
| Earn your Sergeant rating to be recognized as a true Spartan (Online). |
| Score: 15 |
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| Askar |
| Score over 15,000 points in the Campaign meta-game on the fourth mission. |
| Score: 10 |
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| Cavalier |
| Score over 15,000 points in the Campaign meta-game on the third mission. |
| Score: 10 |
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| Demon |
| Score over 15,000 points in the Campaign meta-game on the second mission. |
| Score: 10 |
|
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| Mongoose Mowdown |
| Splatter an enemy with the mongoose in a ranked free for all playlist (Online). |
| Score: 5 |
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| Guerilla |
| Score over 15,000 points in the Campaign meta-game on the first mission. |
| Score: 10 |
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| Steppin' Razor |
| Score a Triple Kill with the sword in a ranked free for all playlist (Online). |
| Score: 5 |
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| Triple Kill |
| Kill 3 enemies within 4 seconds of one another in a ranked free for all playlist (Online). |
| Score: 5 |
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| Killing Frenzy |
| Kill 10 enemies without dying in any ranked free for all playlist (Online). |
| Score: 5 |
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| Graduate |
| Earn 5 EXP or finish 10 games to complete the requirements for basic training (Online). |
| Score: 10 |
|
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| Lee R Wilson Memorial |
| Score 5 grenade sticks in any ranked free for all playlist (Online). |
| Score: 5 |
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| Up Close and Personal |
| Kill 5 enemies by melee or assassination in a ranked free for all playlist (Online). |
| Score: 5 |
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| MVP |
| Earn the MVP in any ranked playlist (Online). |
| Score: 5 |
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| Headshot Honcho |
| Kill 10 enemies with headshots in a ranked free for all playlist or in campaign. |
| Score: 5 |
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| Fear the Pink Mist |
| Kill 5 enemies with the needler in a ranked free for all playlist or in campaign. |
| Score: 5 |
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| Used Car Salesman |
| Destroy a vehicle that has three enemies in it in a ranked playlist or in campaign. |
| Score: 5 |
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| We’re in for some Chop |
| Destroy an enemy vehicle with equipment in a ranked playlist or in campaign. |
| Score: 5 |
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| Catch |
| Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Score: 10 |
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| Campaign Complete: Legendary |
| Finish the Campaign on Legendary (unlocks achievements for Normal and Heroic, if not earned). |
| Score: 125 |
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| Campaign Complete: Heroic |
| Finish the Campaign on Heroic (unlocks achievement for Normal, if not earned). |
| Score: 125 |
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| Campaign Complete: Normal |
| Finish the Campaign on Normal. |
| Score: 125 |
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| Return |
| Finish the final mission of the Campaign on Normal, Heroic, or Legendary. |
| Score: 50 |
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| Mythic |
| Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Score: 10 |
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| The Key |
| Finish the eighth mission of the Campaign on Normal, Heroic, or Legendary. |
| Score: 40 |
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| Tilt |
| Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Score: 10 |
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| Last Stand |
| Finish the seventh mission of the Campaign on Normal, Heroic, or Legendary. |
| Score: 40 |
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| Thunderstorm |
| Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Score: 10 |
|
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| Too Close to the Sun |
| Destroy an enemy banshee with the spartan laser or missile pod in a ranked playlist or in campaign. |
| Score: 5 |
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| Refuge |
| Finish the sixth mission of the Campaign on Normal, Heroic, or Legendary. |
| Score: 30 |
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| Famine |
| Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Score: 10 |
|
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| Cleansing |
| Finish the fifth mission of the Campaign on Normal, Heroic, or Legendary. |
| Score: 30 |
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| Fog |
| Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Score: 10 |
|
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| Assault |
| Finish the fourth mission of the Campaign on Normal, Heroic, or Legendary. |
| Score: 30 |
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| The Road |
| Finish the third mission of the Campaign on Normal, Heroic, or Legendary. |
| Score: 20 |
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| Tough Luck |
| Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Score: 10 |
|
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| Holdout |
| Finish the second mission of the Campaign on Normal, Heroic, or Legendary. |
| Score: 20 |
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| Black Eye |
| Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Score: 10 |
|
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| Landfall |
| Finish the first mission of the Campaign on Normal, Heroic, or Legendary. |
| Score: 20 |
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| Iron |
| Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Score: 10 |
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