1. Landfall

Finish the first mission of the Campaign on Normal, Heroic, or Legendary. 20

2. Holdout

Finish the second mission of the Campaign on Normal, Heroic, or Legendary. 20

3. The Road

Finish the third mission of the Campaign on Normal, Heroic, or Legendary. 20

4. Assault

Finish the fourth mission of the Campaign on Normal, Heroic, or Legendary. 30

5. Cleansing

Finish the fifth mission of the Campaign on Normal, Heroic, or Legendary. 30

6. Refuge

Finish the sixth mission of the Campaign on Normal, Heroic, or Legendary. 30

7. Last Stand

Finish the seventh mission of the Campaign on Normal, Heroic, or Legendary. 40

8. The Key

Finish the eighth mission of the Campaign on Normal, Heroic, or Legendary. 40

9. Return

Finish the final mission of the Campaign on Normal, Heroic, or Legendary. 50

10. Campaign Complete: Normal

Finish the Campaign on Normal. 125

11. Campaign Complete: Heroic

Finish the Campaign on Heroic unlocks achievement for Normal, if not earned. 125

12. Campaign Complete: Legendary

Finish the Campaign on Legendary unlocks achievements for Normal and Heroic, if not earned. 125

13. Iron

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. 10

14. Black Eye

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. 10

15. Tough Luck

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. 10

16. Catch

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. 10

17. Fog

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. 10

18. Famine

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. 10

19. Thunderstorm

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. 10

20. Tilt

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. 10

21. Mythic

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull. 10

22. Spartan Program Recruit

Win your first game in matchmaking to sign up for the Spartan Program Online. 10

23. UNSC Spartan

Earn your Sergeant rating to be recognized as a true Spartan Online. 15

24. Spartan Officer

Advance to the Spartan Officer ranks Online. 25

25. Two for One

Score a Double Kill with a single spartan laser shot in a ranked free for all playlist Online. 5

26. Too Close to the Sun

Destroy an enemy banshee with the spartan laser or missile pod in a ranked playlist or in campaign. 5

27. Triple Kill

Kill 3 enemies within 4 seconds of one another in a ranked free for all playlist Online. 5

28. Overkill

Kill 4 enemies within 4 seconds of one another in a ranked free for all playlist Online. 5

29. Lee R Wilson Memorial

Score 5 grenade sticks in any ranked free for all playlist Online. 5

30. We' re in for some Chop

Destroy an enemy vehicle with equipment in a ranked playlist or in campaign. 5

31. Killing Frenzy

Kill 10 enemies without dying in any ranked free for all playlist Online. 5

32. Steppin' Razor

Score a Triple Kill with the sword in a ranked free for all playlist Online. 5

33. Mongoose Mowdown

Splatter an enemy with the mongoose in a ranked free for all playlist Online. 5

34. Up Close and Personal

Kill 5 enemies by melee or assassination in a ranked free for all playlist Online. 5

35. Fear the Pink Mist

Kill 5 enemies with the needler in a ranked free for all playlist or in campaign. 5

36. Headshot Honcho

Kill 10 enemies with headshots in a ranked free for all playlist or in campaign. 5

37. Used Car Salesman

Destroy a vehicle that has three enemies in it in a ranked playlist or in campaign. 5

38. Marathon Man

Locate and access all Terminals in the Campaign. 40

39. MVP

Earn the MVP in any ranked playlist Online. 5

40. Maybe Next Time Buddy

Board the same vehicle within 10 seconds after being boarded in any free for all playlist Online. 5

41. Demon

Score over points in the Campaign meta-game on the second mission. 10

42. Guerilla

Score over points in the Campaign meta-game on the first mission. 10

43. Cavalier

Score over points in the Campaign meta-game on the third mission. 10

44. Askar

Score over points in the Campaign meta-game on the fourth mission. 10

45. Exterminator

Score over points in the Campaign meta-game on the fifth mission. 10

46. Ranger

Score over points in the Campaign meta-game on the sixth mission. 10

47. Vanguard

Score over points in the Campaign meta-game on the seventh mission. 10

48. Orpheus

Score over points in the Campaign meta-game on eighth mission. 10

49. Reclaimer

Score over points in the Campaign meta-game on the final mission. 10

50. Vidmaster Challenge: Annual

After 9/25/08, complete Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts. 0

51. Double Double

On a Legendary map, get two Double Kills during any ranked or social match. 25

52. Alas, Poor Yorick

On a Legendary map, get 3 Oddball melee kills during any ranked or social match. 25

53. Came... From... Behind

On a Legendary map, get 3 assassinations during any ranked or social match. 50

54. Defend This

On a Legendary map, get a flag melee kill during any ranked or social match. 50

55. Flag Dropped

On a Legendary map, get 2 flag carrier kills during any ranked or social match. 25

56. Road Rage

On a Legendary map, get 5 Warthog chaingun kills during any ranked or social match. 25

57. Look Both Ways

On a Legendary map, get a Splatter Spree during any ranked or social match. 50

58. Hammer Time

On Assembly, get 5 Hammer kills during any ranked or social match. 25

59. Pull

On Citadel, get a Shotgun Spree during any ranked or social match. 25

60. Blades of Fury

On Heretic, get a Sword Spree during any ranked or social match. 25

61. Ghost Patrol

On Longshore, get 3 kills with a Ghost during any ranked or social match. 25

62. Post Mortem

On Orbital, get 2 Death From the Grave medals during any ranked or social match. 25

63. ... Get the Horns

On a Mythic map, get a Bulltrue medal during any ranked or social match. 25

64. Awww, Too Bad

On a Mythic map, get a Killjoy medal during any ranked or social match. 25

65. Killtacular

On a Mythic map, get a Killtacular during any ranked or social match. 25

66. Have Fun Respawning

On a Mythic map, get an Extermination during any ranked or social match. 25

67. Save This Film

On a Mythic map, get a Perfection medal during any ranked or social match. 25

68. Delicious Brains

On a Mythic map, infect 2 humans during any ranked or social match. 25

69. Zombie Repeller

On a Mythic map, kill 2 Zombies during any ranked or social match. 25

70. Tank Dropper

On any Mythic map, get a kill on another player while in monitor mode. 25

71. Assembly Skull

On Assembly, find the hidden skull. 25

72. Citadel Skull

On Citadel, find the hidden skull. 25

73. Heretic Skull

On Heretic, find the hidden skull. 25

74. Longshore Skull

On Longshore, find the hidden skull. 25

75. Orbital Skull

On Orbital, find the hidden skull. 25

76. Sandbox Skull

On Sandbox, find the hidden skull. 25

77. Vidmaster Challenge: Brainpan

Find all the hidden skulls on the Mythic maps. 25

78. Vidmaster Challenge: Lightswitch

Get to the rank of Lieutenant in any playlist in the new EXP progression system. 0

79. Vidmaster Challenge: 7 on 7

Enter into any ranked or social playlist with 7 EXP on the 7th of the month. 0