Poppin' & Lockin'

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

An Honor Serving

Reached the rank of Captain in the UNSC.

To War

Completed the 5th mission on Normal or harder.

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.

One Down, 51 to Go

Completed a Weekly Challenge.

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.

Crowd Control

Earned a Killionaire medal in Firefight.

Firestarter

Scored 50,000 points in a Firefight game.

I Need a Weapon

Completed the 4th mission on Normal or harder.

Protocol Dictates Action

Completed the 3rd mission on Normal or harder.

An Elegant Weapon...

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

We're Just Getting Started

Completed the 2nd mission on Normal or harder.

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.

A New Challenger

Completed all of the Daily Challenges in a given day.

Skunked!

Won a game of Invasion in the 1st phase.

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.

Lemme Upgrade Ya

Advanced a Commendation to a Silver state.

Score Attack

Scored 15,000 points in Score Attack Firefight Matchmaking.

Make it Drizzle

Purchased an item from the Armory.

That's a Knife

Performed an Assassination on an enemy.

Yes, Sensei

Earned a First Strike Medal in a Matchmaking game.

The Start of Something

Reached the rank of Corporal in the UNSC.

What's a Killing Spree?

Earned a Killing Spree in multiplayer Matchmaking.

Doctor, Doctor

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