The Challenger

Completed 25 Challenges.

Lone Wolf Legend

Completed the Campaign solo on Legendary difficulty.

What Power Outage?

Completed Chapter 4, Episode 5 of Spartan Ops without losing a generator on Heroic or harder.

No Easy Way Out

In Ch 1, Ep 5 of Spartan Ops survived the enemy assault during the defense on Normal or harder.

A Legendary Episode

Completed all chapters in Spartan Ops Episode 1 on Legendary difficulty.

Give Him the Stick

Took out both Hunters using only the Sticky Detonator in mission 7.

Bromageddon

Completed the Campaign cooperatively on Heroic or harder.

The Legend of 117

Completed the Campaign on Legendary difficulty.

I Need a Hero

Completed the Campaign on Heroic or harder.

Shutdown

Completed mission 6 on any difficulty.

Wake Up, John

Completed the Campaign on Normal or harder.

Explore the Floor

Tricked or forced a Hunter to fall to his demise in mission 6.

Crimson Alone

Completed a Spartan Ops chapter solo on Legendary.

Midnight

Completed mission 8 on any difficulty.

Composer

Completed mission 7 on any difficulty.

Reclaimer

Completed mission 5 on any difficulty.

Contact the Domain

Found a Terminal in the Campaign.

Infinity

Completed mission 4 on any difficulty.

Forerunner

Completed mission 3 on any difficulty.

Requiem

Completed mission 2 on any difficulty.

Digging up the Past

Found and accessed Chief's record in mission 1.

Knight in White Assassination

Assassinated a Knight in any Spartan Ops mission.

Roses vs Violets

Found one of the RvB Easter Eggs in Episodes 1 to 5 of Spartan Ops.

Hanging on the Combat Deck

Won 20 War Games matchmaking matches.

Movin' On Up

Ranked up your Spartan-IV to SR-20.

What a Poser!

Changed your Spartan's pose in the Spartan ID card.

Operation Completion

Completed a Spartan Ops Mission on any difficulty.

Armorer

Changed your Spartan's armor in the Spartan Armor card.

I <3 Red vs Blue

Won 5 War Games matchmaking matches.

The Challenged

Completed a Challenge.

Not Some Recruit Anymore

Ranked up your Spartan-IV to SR-5.

Dawn

Completed mission 1 on any difficulty.

Bropocalypse

Completed any Campaign mission cooperatively on Heroic or harder.

Badge

Changed your Emblem in the Spartan ID card.

PWND

Changed your Service Tag in the Spartan ID card.