Third Time's A Charm

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

World Traveler

Halo 3: Complete a match on at least 8 different multiplayer maps.

Can't Keep Him Down

Halo 3: Fight alongside and listen to The Man. The Legend. Chips Dubbo.

Game On

Complete 50 missions or multiplayer games.

THE Chips Dubbo?

Halo 2: Fight alongside the legendary Chips Dubbo and listen to his words.

We're Just Getting Started

Halo: Reach: Complete Winter Contingency.

Siege of Ivory Tower

Halo 2: Listen to a hidden music cue in Halo 2.

Tempered Blade

Win 10 multiplayer games.

Skulltaker Halo: CE: Mythic

Halo CE: Find and claim the Mythic skull in remastered mode.

Balaho's Most Wanted

Kill 100 Grunts.

Where Am I?

Complete 10 missions or multiplayer games.

Flaming Ninja Anniversary

Halo 2A MP: Kill an opponent that has the Ninja Redux achievement in Anniversary matchmaking.

Bite The Hand

Kill a 343 developer in matchmaking or someone who has this achievement.

Stick With It...A Little Longer

Play a multiplayer or co-op game at least 3 months after your first game.

The Guardians Are Coming

Get killed by the Guardians.

Sounds Familiar

Halo 3: This stuff is your history!

Standard Operating Brocedure

Complete any co-op level on Normal difficulty.

Brovershield

Complete any co-op level on Heroic difficulty.

Just Getting Started

Kill 100 enemies or players.

Pillar of Autumn

Halo CE: Complete The Pillar of Autumn.

My Buddy Chips

Halo CE: Fight alongside Chips Dubbo and listen to his words of wisdom.

Your Journey Begins

Complete a campaign mission or a match of multiplayer.