| Achievement | How to unlock | Points
|
|---|
| 2 Bugs are Better Than 1 | Win a Skirmish Game with Dual Scarabs. | 10
|
| 24 Hours of Quality | Play Halo Wars for at least 24 Total hours. | 20
|
| A Means to an End (secret) | Complete Mission 13 on any difficulty. | 10
|
| Adjudicate the Arbiter | Complete the Campaign on Heroic Difficulty. | 30
|
| Alas, Poor Andrew Thomas | Collect your first Skull. | 5
|
| Backscratcher (secret) | Complete any Campaign Mission in Co-op Mode. | 10
|
| Basically Naïve | Win 10 Skirmish or Multiplayer Matches | 10
|
| Battened Down the Hatches | Mission 11: Save all the Airlocks. | 5
|
| Beaming with Pride | Mission 13: Destroy 25 units with the Scarab. | 5
|
| Big Al's Scooter | Win a Heroic Skirmish Game against the AI in under 10 minutes. | 10
|
| Build for Success (secret) | Complete Mission 2 on any difficulty. | 10
|
| Covenant "Hot Drop" | Mission 3: Kill at least 5 Covenant Units with the Bridge. | 5
|
| Crushed Colors | Improve your Score in any Campaign Mission. | 10
|
| Dancing with the Beam Queen (secret) | Complete Mission 7 on any difficulty. | 10
|
| Detour the Great Journey | Complete the Campaign on Legendary Difficulty. | 50
|
| Didn't Get to Second Base | Mission 14: Don't claim an extra base. | 5
|
| Don’t Stop Me Now | Win 40 Skirmish or Multiplayer Matches. | 70
|
| Drain Cleaner | Kill 20 enemy squads with a continuous Covenant Leader Power on Memorial Basin. | 30
|
| Empire Builder | Win a game in every Skirmish Game Mode. | 5
|
| Endless Fun | Mission 2: Destroy every Methane Tank. | 5
|
| Epic Grinder | Obtain a lifetime campaign Score over 1,000,000. | 40
|
| Evacuation of the Fittest (secret) | Complete Mission 10 on any difficulty. | 10
|
| Everything's Better with Bacon | Mission 1: Ram 50 Grunts with Warthogs. | 5
|
| Forging a Way to History (secret) | Complete Mission 15 on any difficulty. | 10
|
| Freak on a Streak | Gain at Least 15 population from a single wave in a Reinforcement game. | 20
|
| Gallivant around the Galaxy | Win a game on every Skirmish Map. | 25
|
| Graverobber | Collect all Skulls. | 30
|
| Great Form! (secret) | Complete Mission 6 on any difficulty. | 10
|
| Halo Academic | Unlock 20 Timeline Events. | 15
|
| Halo Historian | Unlock All Timeline Events. | 40
|
| Halo Undergraduate | Unlock a Timeline Event. | 5
|
| Handy with Tools | Mission 12: Repair the Power Core in less than 4 minutes. | 5
|
| Hardly Tardy | Finish five missions under Par Time on Heroic difficulty. | 10
|
| He's Got the Jack | Mission 5: Jack 6 Covenant Vehicles. | 5
|
| High Class Escort (secret) | Complete Mission 4 on any difficulty. | 10
|
| KillJoy | Disrupt 5 active Leader Powers in a single game on Blood River. | 20
|
| Living Loving Bug | Get a Scarab during a Reinforcement game. | 30
|
| Lovely Bunch of Coconuts | Collect 8 Skulls. | 15
|
| Maximum Effort | Win 50 Skirmish or Multiplayer Matches. | 90
|
| Meet Sergeant Forge (secret) | Complete Mission 1 on any difficulty. | 10
|
| Micro Manager | Mission 7: Do not destroy any Power Node. | 5
|
| Momma's Boy | Get a Gold Medal on any mission. | 5
|
| Most Valuable Deck Hand (secret) | Complete Mission 11 on any difficulty. | 10
|
| Mr. Punctual | Finish all missions under Par Time on Heroic difficulty. | 15
|
| My Virtual Friends Love Me | Win a 3v3 Skirmish game with 2 AI Allies. | 10
|
| N00b n0 M0r3 (secret) | Win a Public game. | 10
|
| Never Leave a Man Behind | Finish with 5000 net resources tributed to your teammates on Memorial Basin except in Deathmatch. | 15
|
| Officer on Deck | Win 20 Skirmish or Multiplayer Matches | 30
|
| One and Done | Score the winning point in a game of Keepaway against Legendary AI's. | 30
|
| Own Worst Enemy | Get a Gold Medal with all Debuff Skulls Active. | 20
|
| Patience IS a Virtue (secret) | Complete Mission 5 on any difficulty. | 10
|
| Penny Pincher | Get a winning High Score with 10 or less Squads against the Heroic AI. | 10
|
| Playin' the Field | Win a Skirmish Game with every Leader. | 15
|
| Pull Hard, Pull Deep | Win and never trail in a Tug of War game. | 20
|
| Racing the Clock | Finish one mission under Par Time on Heroic difficulty. | 5
|
| Ramblin' Man | Mission 8: Use Elephants to train 100 infantry. | 5
|
| Ready for the Sequel | 100% Completion. | 75
|
| Rhino Hugger | Mission 6: Successfully protect every Rhino. | 5
|
| Running the Show | Win 30 Skirmish or Multiplayer Matches | 50
|
| Saving the Parade (secret) | Complete Mission 8 on any difficulty. | 10
|
| She’s my Fixer Upper (secret) | Complete Mission 12 on any difficulty. | 10
|
| Signed, Sealed, Delivered (secret) | Complete Mission 14 on any difficulty. | 10
|
| Smash and Grab (secret) | Complete Mission 3 on any difficulty. | 10
|
| So Lonely At the Top (secret) | Win and have the highest score in a Public Game. | 20
|
| Soldier of Ares | Win 75 Skirmish or Multiplayer Matches. | 110
|
| Staving Off the Infection (secret) | Complete Mission 9 on any difficulty. | 10
|
| Sweet Naptime | Mission 9: Put every Colony in Hibernation Mode at the same time. | 5
|
| The Procrastinator | Mission 10: Distrupt all Tractor Beams. | 5
|
| The Real Winner | Mission 4: Save Adam. | 5
|
| Thinkin' about My Doorbell | Mission 15: Open the Doors in order. | 5
|
| Titan | Get 20,000 points in any Skirmish Game. | 15
|
| Tour Coming Through | Hot drop 50 squads to your Covenant Leader in a single game on Barrens. | 30
|
| Walk-off Winner | Use one of the 6 Major Leader Powers to destroy an enemy's last unit. | 30
|
| Wall of Recognition | Get a Gold Medal on every Campaign Mission. | 30
|
| Weapon of Zeus | Win 100 Skirmish or Multiplayer Matches. | 130
|