| Askar (10) |
Score over 15,000 points in the Campaign meta-game on the fourth mission. |
| Assault (30) |
Finish the fourth mission of the Campaign on Normal, Heroic, or Legendary. |
| Black Eye (10) |
Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Campaign Complete: Heroic (125) |
Finish the Campaign on Heroic (normal is unlocked as well). |
| Campaign Complete: Legendary (125) |
Finish the Campaign on Legendary (normal and heroic are unlocked as well). |
| Campaign Complete: Normal (125) |
Finish the Campaign on Normal. |
| Catch (10) |
Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Cavalier (10) |
Score over 15,000 points in the Campaign meta-game on the third mission. |
| Cleansing (30) |
Finish the fifth mission of the Campaign on Normal, Heroic, or Legendary. |
| Demon (10) |
Score over 15,000 points in the Campaign meta-game on the second mission. |
| Exterminator (10) |
Score over 15,000 points in the Campaign meta-game on the fifth mission. |
| Famine (10) |
Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Fear the Pink Mist (5) |
Kill 5 enemies with the needler in a ranked free for all playlist or in campaign. |
| Fog (10) |
Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Graduate (10) |
Earn 5 EXP or finish 10 games to complete the requirements for basic training (Online). |
| Guerilla (10) |
Score over 15,000 points in the Campaign meta-game on the first mission. |
| Headshot Honcho (5) |
Kill 10 enemies with headshots in a ranked free for all playlist or in campaign. |
| Holdout (20) |
Finish the second mission of the Campaign on Normal, Heroic, or Legendary. |
| Iron (10) |
Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Killing Frenzy (5) |
Kill 10 enemies without dying in any ranked free for all playlist (Online). |
| Landfall (20) |
Finish the first mission of the Campaign on Normal, Heroic, or Legendary. |
| Last Stand (40) |
Finish the seventh mission of the Campaign on Normal, Heroic, or Legendary. |
| Lee R Wilson Memorial (5) |
Score 5 grenade sticks in any ranked free for all playlist (Online). |
| Marathon Man (40) |
Locate and access all Terminals in the Campaign. |
| Maybe Next Time Buddy (5) |
Board the same vehicle within 10 seconds after being boarded in any free for all playlist (Online). |
| Mongoose Mowdown (5) |
Splatter an enemy with the mongoose in a ranked free for all playlist (Online). |
| MVP (5) |
Earn the MVP in any ranked playlist (Online). |
| Mythic (10) |
Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Orpheus (10) |
Score over 15,000 points in the Campaign meta-game on the eigth mission. |
| Overkill (5) |
Kill 4 enemies within 4 seconds of one another in a ranked free for all playlist (Online). |
| Ranger (10) |
Score over 50,000 points in the Campaign meta-game on the sixth mission. |
| Reclaimer (10) |
Score over 15,000 points in the Campaign meta-game on the final mission. |
| Refuge (30) |
Finish the sixth mission of the Campaign on Normal, Heroic, or Legendary. |
| Return (50) |
Finish the final mission of the Campaign on Normal, Heroic, or Legendary. |
| Spartan Officer (25) |
Advance to the Spartan Officer ranks (Online). |
| Steppin’ Razor (5) |
Score a Triple Kill with the sword in a ranked free for all playlist (Online). |
| The Key (40) |
Finish the eigth mission of the Campaign on Normal, Heroic, or Legendary. |
| The Road (20) |
Finish the third mission of the Campaign on Normal, Heroic, or Legendary. |
| Thunderstorm (10) |
Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Tilt (10) |
Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Too Close to the Sun (5) |
Destroy an enemy banshee with the spartan laser or missile pod in a ranked playlist or in campaign. |
| Tough Luck (10) |
Find and claim this skull when playing on Normal, Heroic or Legendary difficulty. |
| Triple Kill (5) |
Kill 3 enemies within 4 seconds of one another in a ranked free for all playlist (Online). |
| Two for One (5) |
Score a Double Kill with a single spartan laser shot in a ranked free for all playlist (Online). |
| UNSC Spartan (15) |
Earn your Sergeant rating to be recognized as a true Spartan (Online). |
| Up Close and Personal (5) |
Kill 5 enemies by melee or assassination in a ranked free for all playlist (Online). |
| Used Car Salesman (5) |
Destroy a vehicle that has three enemies in it in a ranked playlist or in campaign. |
| Vanguard (10) |
Score over 50,000 points in the Campaign meta-game on the seventh mission. |
| We’re in for Some Chop (5) |
Destroy an enemy vehicle with equipment in a ranked playlist or in campaign. |