- That Just Happened
Complete the level “The Library” on Heroic difficulty or higher without dying.
04 December 2011 - 9 guides
- Living Legend
Complete every level of the game on Legendary difficulty.
28 November 2011 - 3 guides
- Speed Reader
Complete the level “The Library” on Legendary difficulty in 30 minutes or less.
28 November 2011 - 3 guides
- Never Tell Me the Odds
Escape “The Maw” on Legendary with at least a minute left on the count down.
22 November 2011 - 5 guides
- Bro Hammer
Complete any level on Legendary difficulty cooperatively.
- Look Out for the Little Guys
Complete the level “Two Betrayals” on Heroic difficulty or higher without killing any Grunts.
21 November 2011 - 6 guides
- Leave It Where It Lay
Complete the level “Two Betrayals” on Legendary difficulty without picking up a new weapon.
21 November 2011 - 4 guides
- Tying Up Loose Ends
Kill every Elite on the level “Keyes” on Heroic difficulty or above.
18 November 2011 - 5 guides
- Popcorn.gif
Kill 100 Flood Infection Forms on the level “Keyes” on Heroic difficulty or above.
18 November 2011 - 3 guides
- Breaking Quarantine
Escape the Forerunner facility on the level “343 Guilty Spark” in 21 minutes or less.
18 November 2011 - 3 guides
- This Side Up
Complete the Warthog ride on the level “The Maw” without being forcibly ejected from your vehicle.
18 November 2011 - 7 guides
- Close Quarters Combat
Complete the level “Truth and Reconciliation” with at least four rounds left in your Sniper Rifle.
18 November 2011 - 3 guides
- All According to Plan...
Kill all the enemies in the first encounter of “Truth and Reconciliation” without being detected.
18 November 2011 - 9 guides
- Wraith Hunter
Destroy four Wraith tanks in “Assault on the Control Room” with the Scorpion tank, in a single play.
17 November 2011 - 4 guides
- Headhunter
Locate all the skulls hidden throughout the campaign.
17 November 2011 - 7 guides
- No-Fly Zone
Destroy three of the four Banshees on “Halo” on any difficulty during a single play-through.
17 November 2011 - 9 guides
- Walk it Off
Complete the level “Pillar of Autumn” on Legendary without picking up a health kit.
17 November 2011 - 3 guides
- Overshields are for Sissies
Complete the level “Pillar of Autumn” on Legendary without picking up an Overshield.
17 November 2011 - 2 guides
- Beachhead
Storm the beach of “The Silent Cartographer” with no marine casualties on Heroic or Legendary.
16 November 2011 - 6 guides
- Believe in a Hero
Complete every level of the game on Heroic difficulty.
- Birth of a Spartan
Complete every level of the game on Normal difficulty.
- The Maw
Complete the level “The Maw” on any difficulty.
- Dear Diary...
Read all of the terminals hidden throughout the campaign.
16 November 2011 - 4 guides
- Keyes
Complete the level “Keyes” on any difficulty.
- Two Betrayals
Complete the level “Two Betrayals” on any difficulty.
- Skulls Taken!
Locate half of the skulls hidden throughout the campaign.
16 November 2011 - 5 guides
- The Library
Complete the level “The Library” on any difficulty.
- 343 Guilty Spark
Complete the level “343 Guilty Spark” on any difficulty.
- This One's for Jenkins!
Kill 50 Flood Combat Forms on the level “343 Guilty Spark” on Heroic difficulty or higher.
16 November 2011 - 3 guides
- How Pedestrian
Complete the level “Halo” on any difficulty without entering a vehicle.
15 November 2011 - 3 guides
- Tsantsa
Complete any level with at least three skulls active on Heroic difficulty or higher.
15 November 2011 - 8 guides
- Assault on the Control Room
Complete the level “Assault on the Control Room” on any difficulty.
- Heavy Reading
Read half the terminals hidden throughout the campaign.
15 November 2011 - 3 guides
- I’ll Be Taking That!
Pilot a Banshee on the level “Assault on the Control Room.”
15 November 2011 - 7 guides
- The Silent Cartographer
Complete the level “The Silent Cartographer” on any difficulty.
- Grenadier
Escape the map room in “The Silent Cartographer” without firing a shot on Heroic or Legendary.
15 November 2011 - 8 guides
- Truth and Reconciliation
Complete the level “Truth and Reconciliation” on any difficulty.
- Halo
Complete the level “Halo” on any difficulty.
15 November 2011 - 2 guides
- Pillar of Autumn
Complete the level “Pillar of Autumn” on any difficulty.
15 November 2011 - 2 guides
- Standard Operating Brocedure
Complete any level on Normal difficulty cooperatively.
15 November 2011 - 2 guides
- Brovershield
Complete any level on Heroic difficulty cooperatively.
15 November 2011 - 3 guides
- He’s Unstoppable!
Complete any level on Heroic difficulty or higher without taking health damage.
15 November 2011 - 6 guides
- What have we here?
Read a terminal.
15 November 2011 - 5 guides
- Looks like the Oddball
Find your first campaign skull.
15 November 2011 - 9 guides