Sierra_Cartel

Secret Achievement

Momma's Boy

Got a Gold Medal on any mission.

Own Worst Enemy

Got a Gold Medal with all Debuff Skulls Active.

Wall of Recognition

Got a Gold Medal on every Campaign Mission.

Epic Grinder

Obtained a lifetime campaign Score over 1,000,000.

Everything's Better with Bacon

Mission 1: Rammed 50 Grunts with Warthogs.

Endless Fun

Mission 2: Destroyed every Methane Tank.

Covenant "Hot Drop"

Mission 3: Killed at least 5 Covenant Units with the Bridge.

The Real Winner

Mission 4: Saved Adam.

He's Got the Jack

Mission 5: Jacked 6 Covenant Vehicles.

Rhino Hugger

Mission 6: Successfully protected every Rhino.

Micro Manager

Mission 7: Did not destroy any Power Node.

Ramblin' Man

Mission 8: Used Elephants to train 100 infantry.

Sweet Naptime

Mission 9: Every Colony put in Hibernation Mode at the same time.

The Procrastinator

Mission 10: Distrupted all Tractor Beams.

Battened Down the Hatches

Mission 11: Saved all the Airlocks.

Handy with Tools

Mission 12: Repaired the Power Core in less than 4 minutes.

Beaming with Pride

Mission 13: Destroyed 25 units with the Scarab.

Didn't Get to Second Base

Mission 14: Didn't claim an extra base.

Thinkin' about My Doorbell

Mission 15: Opened the Doors in order.

Graverobber

Collected all Skulls.

One and Done

Scored the winning point in a game of Keepaway against Legendary AI's.

Secret Achievement

Playin' the Field

Won a Skirmish Game with every Leader.

Gallivant around the Galaxy

Won a game on every Skirmish Map.

Empire Builder

Won a game in every Skirmish Game Mode.

Titan

Got 20,000 points in any Skirmish Game.

Halo Undergraduate

Unlocked a Timeline Event.

My Virtual Friends Love Me

Won a 3v3 Skirmish game with 2 AI Allies.

Walk-off Winner

Used one of the 6 Major Leader Powers to destroy an enemy's last unit.

2 Bugs are Better Than 1

Won a Skirmish Game with Dual Scarabs.

Penny Pincher

Got a winning High Score with 10 or less Squads against the Heroic AI.

Halo Academic

Unlock 20 Timeline Events.

Halo Historian

Unlocked All Timeline Events.

Ready for the Sequel

100% Completion.

24 Hours of Quality

Played Halo Wars for at least 24 Total hours.

Secret Achievement

Secret Achievement

Basically Naïve

Won 10 Skirmish or Multiplayer Matches

Officer on Deck

Won 20 Skirmish or Multiplayer Matches

Running the Show

Won 30 Skirmish or Multiplayer Matches

Don't Stop Me Now

Won 40 Skirmish or Multiplayer Matches.

Adjudicate the Arbiter

Completed the Campaign on Heroic Difficulty.

Maximum Effort

Won 50 Skirmish or Multiplayer Matches.

Pull Hard, Pull Deep

Won and never trailed in a Tug of War game.

Hardly Tardy

Finished five missions under Par Time on Heroic difficulty.

Weapon of Zeus

Won 100 Skirmish or Multiplayer Matches.

Lovely Bunch of Coconuts

Collected 8 Skulls.

Soldier of Ares

Won 75 Skirmish or Multiplayer Matches.

Racing the Clock

Finished one mission under Par Time on Heroic difficulty.

Living Loving Bug

Got a Scarab during a Reinforcement game.

Freak on a Streak

Gained at Least 15 population from a single wave in a Reinforcement game.

Never Leave a Man Behind

Finished with 5000 net resources tributed to your teammates on Memorial Basin except in Deathmatch.

Detour the Great Journey

Completed the Campaign on Legendary Difficulty.

Alas, Poor Andrew Thomas

Collected your first Skull.

Tour Coming Through

Hot dropped 50 squads to your Covenant Leader in a single game on Barrens.

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Secret Achievement

Drain Cleaner

Killed 20 enemy squads with a continuous Covenant Leader Power on Memorial Basin.

KillJoy

Disrupted 5 active Leader Powers in a single game on Blood River.

Big Al's Scooter

Won a Heroic Skirmish Game against the AI in under 10 minutes.

Crushed Colors

Improved your Score in any Campaign Mission.

Mr. Punctual

Finished all missions under Par Time on Heroic difficulty.