10 Big Al's ScooterWin a Heroic Skirmish Game against the AI in under 10 minutes
10 Basically NaiveObtain the Recruit Rank on Xbox LIVE
10 BackscratcherComplete any Campaign Mission in Co-op Mode
10 2 Bugs are Better Than 1Win a Skirmish Game with Dual Scarabs
10 Crushed ColorsImprove your Score in any Campaign Mission
10 My Virtual Friends Love MeWin a 3v3 Skirmish game with 2 AI Allies
10 N00b n0 M0r3Win a Matchmade Skirmish Game on Xbox LIVE
10 Penny PincherGet a winning High Score with 10 or less Squads against the Heroic AI
15 Halo AcademicUnlock 20 Timeline Events
15 Mr. PunctualFinish all missions under Par Time on Heroic difficulty
15 Never Leave a Man BehindFinish with 5,000 net resources tributed to your teammates on Memorial Basin
15 Playin' the FieldWin a Skirmish Game with every Leader
15 TitanGet 20,000 points in any Skirmish Game
20 24 Hours of QualityPlay Halo Wars for at least 24 Total Hours
20 Freak on a StreakGain at least 15 population from a single wave in a Reinforcement game.
20 Own Worst EnemyGet a Gold Medal with all Debuff Skulls Active
20 Pull Hard, Pull DeepWin and never trail in a Tug of War game.
20 So Lonely at the TopWin and have the Highest Score in a Matchmade Skirmish Game on Xbox LIVE
25 Gallivant around the GalaxyWin a game on every Skirmish Map
25 KilljoyDisrupt 5 active Leader Powers in a single game on Blood River.
30 Adjudicate the ArbiterComplete the Campaign on Heroic Difficulty
30 Drain CleanerKill 20 enemy squads with a continuous Covenant Leader Power on Memorial Basin.
30 GraverobberCollect all Skulls
30 Living Loving BugGet a Scarab during a Reinforcement game.
30 Officer on DeckObtain the Lieutenant Rank on Xbox LIVE
30 One and DoneScore the winning point in a game of Keepaway against Legendary AIs.
30 Tour Coming ThroughHot drop 50 squads to your Covenant Leader in a single game on Barrens.
30 Walk-Off WinnerUse one of the 6 Major Leader Powers to destroy an enemy's last unit
30 Wall of RecognitionGet a Gold Medal on every Campaign Mission
40 Epic GrinderObtain a Lifetime Campaign Score over 1,000,000
40 Halo HistorianUnlock All Timeline Events
40 OMG BFF FTWComplete entire Campaign in Co-op Mode
5 Thinkin' about My DoorbellMission 15: Open the Doors in order
5 The Real WinnerMission 4: Save Adam
5 The ProcrastinatorMission 10: Disrupt all Tractor Beams
5 Sweet NaptimeMission 9: Put every Colony in Hibernation Mode at the same time
5 Rhino HuggerMission 6: Successfully protect every Rhino
5 Ramblin' ManMission 8: Use Elephants to train 100 Infantry
5 Momma's BoyGet a Gold Medal on any mission
5 Micro ManagerMission 7: Do not destroy any Power Node
5 He's Got The JackMission 5: Jack 6 Covenant Vehicles
5 Handy with ToolsMission 12: Repair the Power Core in less than 4 minutes
5 Everything's Better with BaconMission 1: Ram 50 Grunts with Warthogs
5 Endless FunMission 2: Destroy every Methane Tank
5 Empire BuilderWin a game in every Skirmish Game Mode
5 Didn't Get To Second BaseMission 14: Don't claim an extra base
5 CovenantMission 3: Kill at least 5 Covenant Units with the Bridge
5 Beaming with PrideMission 13: Destroy 25 units with the Scarab
5 Battened Down the HatchesMission 11: Save all the Airlocks
5 Alas, Poor Andrew ThomasCollect your first Skull
50 Detour the Great JourneyComplete the Campaign on Legendary Difficulty
50 Running the ShowObtain the General Rank on Xbox LIVE
75 Ready for the Sequel100% Completion