If They Came to Hear Me Beg

Performed an Assassination against an Elite to survive a fall that would've been fatal.

Poppin' & Lockin'

Noble 1: Destroyed a vehicle using Armor Lock in a matchmade game.

Cross-Mappin'

Noble 1: Killed a player at long range with the DMR in a matchmade Slayer game.

All Alone

Defiant: Was the last surviving uninfected player in a matchmade Infection game.

Two Corpses in One Grave

Killed 2 vehicles at once with the Target Locator during the 3rd mission.

A Spoonful of Blamite

Killed 10 enemies in Firefight or Campaign with a supercombine explosion.

They've Always Been Faster

Cleared the 2nd mission without setting foot in a drivable vehicle.

KEEP IT CLEAN

Killed 7 Moa during the 2nd mission of the Campaign.

Be My Wingman, Anytime

Let a teammate spawn on you 5 times in an Invasion Matchmaking game.

Make It Rain

Purchased an item from the Armory that required the rank of Lt. Colonel.

Gods Must Be Strong

Completed the Campaign on Legendary difficulty.

Folks Need Heroes...

Completed the Campaign on Heroic difficulty.

A New Challenger

Completed all of the Daily Challenges in a given day.

Both Barrels

Noble 1: Earned a Double Kill with the shotgun in multiplayer Matchmaking.

An Honor Serving

Reached the rank of Captain in the UNSC.

Lemme Upgrade Ya

Advanced a Commendation to a Silver state.

Knife to a Gunfight

As an Elite, killed 5 Spartan players in Matchmaking.

Skunked!

Won a game of Invasion in the 1st phase.

Yes, Sensei

Earned a First Strike Medal in a Matchmaking game.

A Storage Solution

Used the File Browser to upload a file to your File Share.

Cool File, Bro

Recommended a file to someone.

Wake Up, Buttercup

Destroyed the Corvette's engines & escort in under 3 minutes in the 6th mission on Heroic or harder.

Crowd Control

Earned a Killionaire medal in Firefight.

What's a Killing Spree?

Earned a Killing Spree in multiplayer Matchmaking.

One Down, 51 to Go

Completed a Weekly Challenge.

Banshees, Fast and Low

Hijacked a Banshee during the Reach Campaign.

Your Heresy Will Stay Your Feet

Killed the Elite Zealot before he escaped during the 5th mission.

Heat in the Pipe

Scored 1,000,000 points in a Firefight game.

Game, Set, Match

Completed a Firefight set on Legendary without dying.

Blaze of Glory

Scored 200,000 points in a Firefight game.

Firestarter

Scored 50,000 points in a Firefight game.

The Soldier We Needed You To Be

Completed the Campaign on Normal difficulty.

Send Me Out... with a Bang

Completed the 10th mission on Normal or harder.

This is Not Your Grave...

Completed the 9th mission on Normal or harder.

Dust and Echoes

Completed the 8th mission on Normal or harder.

I Didn't Train to Be a Pilot

Killed 3 of the anti-aircraft batteries during the 8th mission.

Into the Howling Dark

Completed the 7th mission on Normal or harder.

I See You Favor a .45

Killed 10 enemies in a Firefight or Campaign session with the M6G pistol.

You Flew Pretty Good

Completed the 6th mission on Normal or harder.

To War

Completed the 5th mission on Normal or harder.

I Need a Weapon

Completed the 4th mission on Normal or harder.

The Start of Something

Reached the rank of Corporal in the UNSC.

Lucky Me

Earned a Triple Kill while Jetpacking in Campaign, Firefight or Matchmaking.

Score Attack

Scored 15,000 points in Score Attack Firefight Matchmaking.

Protocol Dictates Action

Completed the 3rd mission on Normal or harder.

That's a Knife

Performed an Assassination on an enemy.

An Elegant Weapon...

Killed 10 enemies in a Firefight or Campaign session with the DMR.

Doctor, Doctor

Used a Health Pack to replenish life after taking body damage.

We're Just Getting Started

Completed the 2nd mission on Normal or harder.

Swap Meet

Traded weapons with an AI ally in Campaign.

Make it Drizzle

Purchased an item from the Armory.