CodenameHaar

New Whip Hijack 10 Vehicles.
100/100

Clean Lap On The Maw complete the warthog run without being forcibly ejected from your vehicle.

Jiralhanae Conservationist On The Most Dangerous Game don’t kill any rampaging Brutes.

Arm's Length On 343 Guilty Spark complete the first floor without taking a hit.

All Shield, No Yield Complete any level on Heroic difficulty or higher without taking health damage.

That’s My Ride On Assault on the Control Room get to the Banshee before the Elite.

Beat the Drop Complete a Remixed Mission without dying.

REMIX! Complete a Remixed Mission.

Food Critic Listen to the Thirsty Grunt talk about his eating habits.

Even Tempered With the Temperamental Skull activated beat Halo without upsetting anyone.

Map Quest Complete The Silent Cartographer without shooting, using grenades, melee, dying, or restarting.

Hot Streak With the Floor Is Lava Skull activated beat a mission without jumping or dying.

Frugal Fire Equip Famine, Recession, and Johnny Ammo Tree Skulls and beat a mission without running out of ammo.

Like Old Times Complete Two Betrayals with the Speed Limit, Endurance Spec, Hip Fire, and Armistice Skulls enabled.

I Can Do This All Day Finish 500 battles. (Excluding Offline Versus and Training mode.)
500/500

Weapon X Clear 100 combo challenges in Character Lessons.
100/100

Parting Gifts Find all skulls and terminals in Heavy Burden.
100/100

Headhunter Collect all 39 Skulls.
100/100

Collector’s Addition Find all skulls and terminals in the game.
100/100

Lore Have Mercy Activate all 13 Terminals.
100/100

Brute Loops Find all skulls and terminals in The Most Dangerous Game.
100/100

Souvenirs Find all skulls and terminals in Boarding Action.
100/100

Combo Aficionado Clear 10 combo challenges in Character Lessons.
10/10

Right Back Atcha! Perform Crossover Reflect 5 times during battle. (Excluding Offline Versus and Training mode.)
5/5

This is My Ship Now Eliminate Captain Keyes and trap his six avenging Marines in the Autumn’s observation pen.

No Rush Find all skulls and terminals in The Maw.
100/100

Priorities Find all skulls and terminals in Keyes.
100/100

Bad Gas Destroy 100 Grunt backpacks.
100/100

Outpost Discoveries Find all skulls and terminals in Two Betrayals.
100/100

Ranking Up Without Fear Finish a Ranked Match.

Let's Take It Easy Finish 10 Casual Matches.
10/10

Super Assemble! Successfully land Super Assemble 10 times during battle. (Excluding Offline Versus and Training mode.)
10/10

Perfect Timing! Successfully land a Perfect Reflect during battle. (Excluding Offline Versus and Training mode.)

Timeless Tomes Find all skulls and terminals in The Library.
100/100

Making a Necklace Collect 22 Skulls.
100/100

Proto Gravemind Find all skulls and terminals in 343 Guilty Spark.
100/100

Stowed in Snow Find all skulls and terminals in Assault on the Control Room.
100/100

Buried Treasure Find all skulls and terminals in Silent Cartographer.
100/100

Plundered Find all skulls and terminals in Truth and Reconciliation.
100/100

Plate Tectonics Break off 25 Hunter backplates.
100/100

Successful Search Find all skulls and terminals in Halo.
100/100

Clean Sweep Find all skulls and terminals in Pillar of Autumn.
100/100

Saw It Coming a Mile Away Perform 10 Assemble Counters during battle. (Excluding Offline Versus and Training mode.)
10/10

Roll the Tape! View any replay.

Crossover Event Successfully land Crossover 10 times during battle. (Excluding Offline Versus and Training mode.)
10/10

Your Very Own Stamp of Approval Use a Sticker.

Welcome to the Danger Room Create a room in Room Match.

Following in Their Footsteps Follow a player.

The Boulder feels conflicted about playing 100 online matches Play 100 Online Matches

Champion Buster Clear the Champion Course in All-Star Arena.