Make It Rain

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

Candy from a Baby

Defiant: Captured two flags from an enemy capture zone in a matchmade Stockpile game.

Poppin' & Lockin'

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

Offensive Driver

Noble 1: Earned a kill in a matchmade Rocket Race game.

You Blew It Up!

Noble 1: Your team blew up the research facility in a matchmade Invasion game on Breakpoint.

Paper Beats Rock

Defiant: Assassinated a player that just exited Armor-Lock in a matchmade game.

Don't Touch That!

Defiant: Prevented the attacking team from touching the flag in a matchmade 1-Flag CTF game.

Return to Sender

Defiant: Returned two flags in a matchmade CTF game.

You Ate All the Chips

Noble 1: Your team collected all of the flags in a matchmade Stockpile game.

All Alone

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

Emergency Room

Anniversary: Infected 3 players in a single round in a matchmade Infection game.

Crackin' Skulls

Defiant: Killed 3 players with the Oddball in a matchmade Oddball game.

Bounty Hunter

Anniversary: Captured 10 skulls at once in a matchmade Headhunter game.

Totally Worth It

Noble 1: Earned a Double Kill from the Grave in multiplayer Matchmaking.

Dive Bomber

Anniversary: Performed a Beat Down on an enemy while using the Jetpack during a matchmade game.

License to Kill

Anniversary: Ran over 5 people with a vehicle in a matchmade game.

Stick it to the Man!

Anniversary: Killed the flag carrier with a Plasma Grenade in a matchmade game.

From Hell's Heart

Anniversary: Killed an enemy with their own grenade that was stuck to you in a matchmade game.

Top Shot

Anniversary: Earned 3 headshots in a row in a matchmade game.

Both Barrels

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

Cross-Mappin'

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

An Honor Serving

Reached the rank of Captain in the UNSC.

A New Challenger

Completed all of the Daily Challenges in a given day.

Skunked!

Won a game of Invasion in the 1st phase.

Score Attack

Scored 15,000 points in Score Attack Firefight Matchmaking.

A Spoonful of Blamite

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

If They Came to Hear Me Beg

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

A Storage Solution

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

Cool File, Bro

Recommended a file to someone.

One Down, 51 to Go

Completed a Weekly Challenge.

Wake Up, Buttercup

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

Two Corpses in One Grave

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

They've Always Been Faster

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

Gods Must Be Strong

Completed the Campaign on Legendary difficulty.

A Monument to All Your Sins

Completed every mission in Halo: Reach alone, on Legendary.

Folks Need Heroes...

Completed the Campaign on Heroic difficulty.

Tank Beats Everything

Finished the 9th mission on Legendary with the Scorpion intact.

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.

Lemme Upgrade Ya

Advanced a Commendation to a Silver state.

KEEP IT CLEAN

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

Send Me Out... with a Bang

Completed the 10th mission on Normal or harder.

The Soldier We Needed You To Be

Completed the Campaign on Normal difficulty.

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.

You Flew Pretty Good

Completed the 6th mission on Normal or harder.

Heat in the Pipe

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

Blaze of Glory

Scored 200,000 points in a Firefight game.

Lucky Me

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

To War

Completed the 5th mission on Normal or harder.

I Need a Weapon

Completed the 4th mission on Normal or harder.

Yes, Sensei

Earned a First Strike Medal in a Matchmaking game.

That's a Knife

Performed an Assassination on an enemy.

Be My Wingman, Anytime

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

Knife to a Gunfight

As an Elite, killed 5 Spartan players in Matchmaking.

What's a Killing Spree?

Earned a Killing Spree in multiplayer Matchmaking.

The Start of Something

Reached the rank of Corporal in the UNSC.

Make it Drizzle

Purchased an item from the Armory.

Protocol Dictates Action

Completed the 3rd mission on Normal or harder.

We're Just Getting Started

Completed the 2nd mission on Normal or harder.

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.

Swap Meet

Traded weapons with an AI ally in Campaign.

I See You Favor a .45

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

Game, Set, Match

Completed a Firefight set on Legendary without dying.

Firestarter

Scored 50,000 points in a Firefight game.

Crowd Control

Earned a Killionaire medal in Firefight.