Elder Signs

Halo 3: View 2 different sigils on Valhalla.

Third Time's A Charm

Halo 3: Play a game of Halo 3 on the 25th of any month.

Devastating

Halo 3: Complete all Halo 3 Legendary campaign missions in under 3 hours.

Dawn

Halo 4: Complete Dawn.

Requiem

Halo 4: Complete Requiem.

Forerunner

Halo 4: Complete Forerunner.

Infinity

Halo 4: Complete Infinity.

Reclaimer

Halo 4: Complete Reclaimer.

Shutdown

Halo 4: Complete Shutdown.

Composer

Halo 4: Complete Composer.

Midnight

Halo 4: Complete Midnight.

Piece of Cake

Halo 4: Beat the par time on Dawn.

Interloper

Halo 4: Beat the par time on Requiem.

Raging in the Dark

Halo 4: Beat the par time on Forerunner.

Ouroboros

Halo 4: Beat the par time on Infinity.

Gimme That

Halo 4: Beat the par time on Reclaimer.

Shut. Down. Everything.

Halo 4: Beat the par time on Shutdown.

Symphony of Pain

Halo 4: Beat the par time on Composer.

Countdown

Halo 4: Beat the par time on Midnight.

Easy As One Two Three

Halo 4: Beat the par time on all Halo 4 levels.

Gunslinger

Halo 4: Beat the par score on Dawn.

Dark Fortress

Halo 4: Beat the par score on Requiem.

Shadow of Sundered Star

Halo 4: Beat the par score on Forerunner.

Jungle Warfare

Halo 4: Beat the par score on Infinity.

Librarian's Pet

Halo 4: Beat the par score on Reclaimer.

Emergency Shutdown

Halo 4: Beat the par score on Shutdown.

Head Banging

Halo 4: Beat the par score on Composer.

Witching Hour

Halo 4: Beat the par score on Midnight.

You Had it Coming

Halo 4: Beat the par score on every Halo 4 level.

War

Halo 4: Activate Terminal 1 on Requiem.

Lord of Admirals

Halo 4: Activate Terminal 2 on Forerunner.

Charum Hakkor

Halo 4: Activate Terminal 3 on Infinity.

Flood

Halo 4: Activate Terminal 4 on Reclaimer.

Knights

Halo 4: Activate Terminal 5 on Shutdown.

Justice

Halo 4: Activate Terminal 6 on Composer.

Cryptum

Halo 4: Activate Terminal 7 on Midnight.

Terminus

Halo 4: Activate all Halo 4 Terminals.

Wake Up, John

Halo 4: Complete every level of the game on Normal difficulty.

I Need a Hero

Halo 4: Complete every level of the game on Heroic difficulty.

The Legend of 117

Halo 4: Complete every level of the game on Legendary difficulty.

Lone Wolf Legend

Halo 4: Complete every level of the game on Legendary difficulty, by yourself.

This is my Rifle, This is my Gun

Halo 4: Carry a UNSC weapon all the way through Forerunner on Heroic or Legendary.

Bros to the Close

Halo 4: Complete Infinity without one preventable Marine death on Heroic or Legendary.

Explore the Floor

Halo 4: Trick or force a Hunter to fall to its demise on Shutdown on Heroic or Legendary.

Give Him the Stick

Halo 4: Take out both Hunters using only the Sticky Detonator on Composer.

Chief, Smash!

Halo 4: Kill 3 Crawlers in one hit with the Gravity Hammer on Midnight.

You're No Chips

Halo 4: What do Marines know about sticks?

A Long Time Ago

Halo 4: Play a game of Halo 4 on the 6th of any month.

You're Joking

Halo 4: Complete all Halo 4 Legendary campaign missions in under 3 hours.

He's Running a Marathon...

Halo 2: Spot the developer in the opening cutscene of Gravemind on Legendary in Classic Mode.

Destination Vacation

Halo 2: View one of the seasonal signs on Zanzibar in classic multiplayer.

Tighten Up The Graphics

Halo 2: Complete every level of Halo 2 having seen it in both classic and remastered mode.

Mind the Gap

Halo 3: 4 vehicles, 1 gap on Legendary using Cowbell, Catch, Thunderstorm, Mythic, and Tough Luck.

Back In The Day

Halo CE: Play a CTF custom game on Blood Gulch with 4 players. Tri-tip optional.

Pacifist

Halo CE: Finish The Silent Cartographer without shooting, grenades, melee, dying or restarting.

Wraith Hunter

Halo CE: Destroy four Wraith tanks in Assault on the Control Room with the Scorpion tank.

Close Quarters Combat

Halo CE: Complete The Truth and Reconciliation with at least four rounds left in your Sniper Rifle.

This Side Up

Halo CE: Complete the Warthog ride of The Maw without being forcibly ejected from your vehicle.

Mortardom

Halo 4: On Reclaimer, use a Wraith to kill at least four enemy Wraiths on Heroic or Legendary.

All According to Plan...

Halo CE: Kill the first group of enemies on The Truth and Reconciliation without being detected.

Beachhead

Halo CE: Storm The Silent Cartographer beach with no Marine casualties on Heroic or Legendary.

The Return of Megg

Halo 2: She's not picking up.

No-Fly Zone

Halo CE: Destroy three of the four Banshees on Halo during a single play-through.

Bro Hammer

Complete any co-op level on Legendary difficulty.

Digging up the Past

Halo 4: Access the Master Chief's records on Dawn.

Missing Link

Halo 3: Watching. Waiting. Plotting.

Eminent Domain

Halo 2A MP: In Territories, control any 3 Territories simultaneously for 30 seconds.

Game Master

Created and saved 5 Custom Game types.

Gate Your Thirst!

Halo 2A MP: Found and destroyed the BLAST soda can on Stonetown.

High Altitude Thirst!

Halo 2A MP: Found and destroyed the BLAST soda can on Zenith.

Invaders Repelled

Halo 2A MP: In King of the Hill, kill 5 opponents within your controlled hill.

Master Forger

Created and saved 5 Custom Maps in Forge.

Power Play

Halo 2A MP: On Warlord, get 5 active camouflage power ups in a single game.

Put Up Your Dukes

Halo 2A MP: Get 25 melee kills in multiplayer.

Red vs. Blue

Halo 2A MP: Win 10 matches on Bloodline in multiplayer.

Rule Your Thirst!

Halo 2A MP: Found and destroyed the BLAST soda can on Warlord.

Shields Up!

Halo 2A MP: On Zenith, personally activate the center energy shield 3 times in one matchmade game.

Shook the Hornet's Nest

Halo 2A MP: Get 30 kills with the Hornet in multiplayer.

Skeet Shooter

Halo 2A MP: Killed 15 opponents that were airborne from a Man Cannon.

Stayin' Alive

Halo 2A MP: In Juggernaut, survive as the Juggernaut for 30 seconds.

The Goose is Loose

Halo 2A MP: Get 25 kills with the Gungoose in multiplayer.

Thirst Locked Down!

Halo 2A MP: Found and destroyed the BLAST soda can on Lockdown.

Top Gungoose

Halo 2A MP: Get a kill with the Gungoose while airborne.

BLASTacular!

Halo 2A MP: Destroyed all the Halo 2 Anniversary Multiplayer BLAST soda cans.

Bloody Thirsty!

Halo 2A MP: Found and destroyed the BLAST soda can on Bloodline.

Bombing Run

Halo 2A MP: In Assault, take, plant, and score from the bomb spawn without dying or dropping it.

Cold as Ice

Halo 2A MP: On Lockdown, kill an opponent with the hanging ice.

Cold Fusion

Halo 2A MP: Kill an opponent by detonating a Fusion Coil.

Counter-Sniped

Halo 2A MP: With a Sniper Rifle or Beam Rifle kill an enemy that was zoomed in.

Triple Threat

Halo 2A MP: In Ricochet, pass once, score once, and kill at least one enemy in the same match.

Wetwork

Halo 2A MP: On Shrine in CTF, activate the enemy base waterfall and, before it stops, grab the flag.

Worship Your Thirst!

Halo 2A MP: Found and destroyed the BLAST soda can on Shrine.

Zealot

Halo 2A MP: In Anniversary matchmaking, win 10 games as an Elite.

Dirty Bird

Halo 2: Fly the Heretic Banshee.

A Preference for Pain

Halo 3: Complete the Halo 3 LASO Campaign playlist.

Aficiando

Halo 3: Complete three Halo 3 playlists.

Naked Tyrant

Halo 4: Complete the Halo 4 LASO Campaign playlist.

Devotee

Halo 4: Complete three Halo 4 playlists.

Throne of Bones

Find and claim all the campaign skulls in Halo:CE, Halo 2, and Halo 3.

Boot Camp Hero

Halo 3: Complete a Halo 3 playlist.

A Pile of Medals

Collect 2,000 campaign or playlist medals.

A Crate of Medals

Collect 3,000 campaign or playlist medals.

A Heap of Medals

Collect 4,000 campaign or playlist medals.

A Few Trinkets

Collect 5,000 campaign or playlist medals.

Chest of Gold

Halo 4: Complete a Halo 4 playlist.

Oh, These Baubles?

Collect 6,000 campaign or playlist medals.

Chesty Puller Starter Kit

Collect 7,000 campaign or playlist medals.

Medal Master Chief

Collect 8,000 campaign or playlist medals.

Contender

Win 50 multiplayer games.

In It To Win It

Win 200 multiplayer games.

Game On

Complete 50 missions or multiplayer games.

Bonus Level

Complete 200 missions or multiplayer games.

Sharpshooter

Win 150 multiplayer games.

Can't Put It Down

Complete 150 missions or multiplayer games.

Battle Hardened

Win 250 multiplayer games.

Up All Night

Complete 250 missions or multiplayer games.

Thermopylae

Win 300 multiplayer games.

Can't Get Enough

Complete 300 missions or multiplayer games.

Striking Fear in Their Hearts

Win 350 multiplayer games.

Committed

Complete 350 missions or multiplayer games.

Steady Aim

Win 400 multiplayer games.

Big Time Gamer

Complete 400 missions or multiplayer games.

Quick Trigger Finger

Win 450 multiplayer games.

Long Time Fan

Complete 450 missions or multiplayer games.

Multiplayer Champion

Win 500 multiplayer games.

The Long Haul

Complete 500 missions or multiplayer games.

Just A Taste

Collect 500 campaign or playlist medals.

All Out of Bubblegum

Collect 1,000 campaign or playlist medals.

Foe Hammer

Kill 5,000 enemies or players.

Gruntageddon

Kill 1000 Grunts.

Were It So Easy

Kill 1000 Elites.

Scavenger Hunt

Kill 1000 Jackals.

Dankey Kang

Kill 1000 Brutes.

Wyrmslayer

Kill 250 Hunters.

Remove the Bishops From the Board

Kill 1000 Watchers.

Knightbane

Kill 1000 Knights.

Dogcatcher

Kill 1000 Crawlers.

Greenhorn

Halo CE: Complete every level of the game on Easy difficulty.

Big Green Style

Halo 2: Complete every level of the game on Easy difficulty.

Training Wheels

Halo 3: Complete every level of the game on Easy difficulty.

Librarian's Gift

Halo 4: Complete every level of the game on Easy difficulty.

Herald of the Reclamation

Complete all campaigns on Easy difficulty.

King of the Crows

Halo 3: Beat the par score on Crow's Nest.

Witch Doctor

Halo 3: Find and claim all Skulls in Halo 3.

Skulltaker Halo 3: Blind

Halo 3: Find and claim the Blind Skull on Normal or harder.

Skulltaker Halo 3: Grunt Birthday Party

Halo 3: Find and claim the Grunt Birthday Party Skull on Normal or harder.

Skulltaker Halo 3: Cowbell

Halo 3: Find and claim the Cowbell Skull on Normal or harder.

Skulltaker Halo 3: IWHBYD

Halo 3: Find and claim the IWHBYD Skull on Normal or harder.

No Stone Unturned

Halo 3: Activate all Halo 3 Terminals.

MVP

Halo 2A MP: Finished as the top player on the winning team in a matchmade game.