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