| icon | info | gamerscore |
|---|---|---|
| Halo Complete the level “Halo” on any difficulty. | 25 | |
| How Pedestrian Complete the level “Halo” on any difficulty without entering a vehicle. | 25 | |
| Pillar of Autumn Complete the level “Pillar of Autumn” on any difficulty. | 25 | |
| Overshields are for Sissies Complete the level “Pillar of Autumn” on Legendary without picking up an Overshield. | 10 | |
| What have we here? Read a terminal. | 10 | |
| Looks like the Oddball Find your first campaign skull. | 10 | |
| The Silent Cartographer Complete the level “The Silent Cartographer” on any difficulty. | 25 | |
| Beachhead Storm the beach of “The Silent Cartographer” with no marine casualties on Heroic or Legendary. | 10 | |
| Truth and Reconciliation Complete the level “Truth and Reconciliation” on any difficulty. | 25 | |
| Standard Operating Brocedure Complete any level on Normal difficulty cooperatively. | 10 | |
| Brovershield Complete any level on Heroic difficulty cooperatively. | 20 | |
| Bro Hammer Complete any level on Legendary difficulty cooperatively. | 50 | |
| Walk it Off Complete the level “Pillar of Autumn” on Legendary without picking up a health kit. | 25 | |
| Grenadier Escape the map room in “The Silent Cartographer” without firing a shot on Heroic or Legendary. | 25 | |
| Living Legend Complete every level of the game on Legendary difficulty. | 50 | |
| Leave It Where It Lay Complete the level “Two Betrayals” on Legendary difficulty without picking up a new weapon. | 25 | |
| All According to Plan... Kill all the enemies in the first encounter of “Truth and Reconciliation” without being detected. | 10 | |
| No-Fly Zone Destroy three of the four Banshees on “Halo” on any difficulty during a single play-through. | 10 | |
| This Side Up Complete the Warthog ride on the level “The Maw” without being forcibly ejected from your vehicle. | 10 | |
| Believe in a Hero Complete every level of the game on Heroic difficulty. | 20 | |
| Popcorn.gif Kill 100 Flood Infection Forms on the level “Keyes” on Heroic difficulty or above. | 25 | |
| This One's for Jenkins! Kill 50 Flood Combat Forms on the level “343 Guilty Spark” on Heroic difficulty or higher. | 10 | |
| He’s Unstoppable! Complete any level on Heroic difficulty or higher without taking health damage. | 20 | |
| Tsantsa Complete any level with at least three skulls active on Heroic difficulty or higher. | 50 | |
| Breaking Quarantine Escape the Forerunner facility on the level “343 Guilty Spark” in 21 minutes or less. | 25 | |
| Headhunter Locate all the skulls hidden throughout the campaign. | 50 | |
| Birth of a Spartan Complete every level of the game on Normal difficulty. | 10 | |
| Dear Diary... Read all of the terminals hidden throughout the campaign. | 50 | |
| I’ll Be Taking That! Pilot a Banshee on the level “Assault on the Control Room.” | 25 | |
| Skulls Taken! Locate half of the skulls hidden throughout the campaign. | 25 | |
| Close Quarters Combat Complete the level “Truth and Reconciliation” with at least four rounds left in your Sniper Rifle. | 25 | |
| The Maw Complete the level “The Maw” on any difficulty. | 25 | |
| Keyes Complete the level “Keyes” on any difficulty. | 25 | |
| Heavy Reading Read half the terminals hidden throughout the campaign. | 25 | |
| Two Betrayals Complete the level “Two Betrayals” on any difficulty. | 25 | |
| The Library Complete the level “The Library” on any difficulty. | 25 | |
| 343 Guilty Spark Complete the level “343 Guilty Spark” on any difficulty. | 25 | |
| Assault on the Control Room Complete the level “Assault on the Control Room” on any difficulty. | 25 | |
| Look Out for the Little Guys Complete the level “Two Betrayals” on Heroic difficulty or higher without killing any Grunts. | 10 | |
| Wraith Hunter Destroy four Wraith tanks in “Assault on the Control Room” with the Scorpion tank, in a single play. | 10 | |
| That Just Happened Complete the level “The Library” on Heroic difficulty or higher without dying. | 10 | |
| Speed Reader Complete the level “The Library” on Legendary difficulty in 30 minutes or less. | 25 | |
| Never Tell Me the Odds Escape “The Maw” on Legendary with at least a minute left on the count down. | 25 | |
| Tying Up Loose Ends Kill every Elite on the level “Keyes” on Heroic difficulty or above. | 10 |
