A Monument To All Your Sins
Completed every mission in Halo: Reach alone, on Legendary.
A New Challenger
Completed all of the Daily Challenges in a given day.
A Spoonful Of Blamite
Killed 10 enemies in Firefight or Campaign with a supercombine explosion.
A Storage Solution
Used the File Browser to upload a file to your File Share.
An Elegant Weapon
Killed 10 enemies in a Firefight or Campaign session with the DMR.
An Honor Serving
Reached the rank of Captain in the UNSC.
Banshees, Fast And Low
Hijacked a Banshee during the Reach Campaign.
Be My Wingman Anytime
Let a teammate spawn on you 5 times in an Invasion Matchmaking game.
Blaze Of Glory
Scored 200,000 points in a Firefight game.
Cool File, Bro
Recommended a file to someone.
Earned a Killionaire medal in Firefight.
Used a Health Pack to replenish life after taking body damage.
Dust And Echoes
Completed the 8th mission on Normal or harder.
Scored 50,000 points in a Firefight game.
Folks Need Heroes...
Completed the Campaign on Heroic difficulty.
Game, Set, Match
Completed a Firefight set on Legendary without dying.
Gods Must Be Strong
Completed the Campaign on Legendary difficulty.
Heat In The Pipe
Scored 1,000,000 points in a Firefight game.
I Didn't Train To Be A Pilot
Killed 3 of the anti-aircraft batteries during the 8th mission.
I Need A Weapon
Completed the 4th mission on Normal or harder.
I See You Favour A .45
Killed 10 enemies in a Firefight or Campaign session with the M6G pistol.
If They Came To Hear Me Beg
Performed an Assassination against an Elite to survive a fall that would've been fatal.
Into The Howling Dark
Completed the 7th mission on Normal or harder.
KEEP IT CLEAN
Killed 7 Moa during the 2nd mission of the Campaign.
Knife To A Gun Fight
As an Elite, killed 5 Spartan players in Matchmaking.
Lemme Upgrade Ya
Advanced a Commendation to a Silver state.
Earned a Triple Kill while Jetpacking in Campaign, Firefight or Matchmaking.
Make It Drizzle
Purchased an item from the Armory.
Make It Rain
Purchased an item from the Armory that required the rank of Lt. Colonel.
One Down, 51 To Go
Completed a Weekly Challenge.
Protocol Dictates Action
Completed the 3rd mission on Normal or harder.
Scored 15,000 points in Score Attack Firefight Matchmaking.
Send Me Out... With A Bang
Completed the 10th mission on Normal or harder.
Won a game of Invasion in the 1st phase.
Traded weapons with an AI ally in Campaign.
Tank Beats Everything
Finished the 9th mission on Legendary with the Scorpion intact.
That's A Knife
Performed an Assassination on an enemy.
The Soldier We Need You To Be
Completed the Campaign on Normal difficulty.
The Start Of Something
Reached the rank of Corporal in the UNSC.
They've Always Been Faster
Cleared the 2nd mission without setting foot in a drivable vehicle.
This Is Not Your Grave
Completed the 9th mission on Normal or harder.
Completed the 5th mission on Normal or harder.
Two Corpses In One Grave
Killed 2 vehicles at once with the Target Locator in the 3rd mission.
Wake Up Buttercup
Destroyed the Corvette's engines & escort in under 3 minutes in the 6th mission on Heroic or harder.
We're Just Getting Started
Completed the 2nd mission on Normal or harder.
What's A Killing Spree?
Earned a Killing Spree in multiplayer Matchmaking.
Earned a First Strike Medal in a Matchmaking game.
You Flew Pretty Good
Completed the 6th mission on Normal or harder.
Your Heresy Will Stay Your Feet
Killed the Elite Zealot before he escaped during the 5th mission.