Milestones are reached by attaining a certain level of Halo gamerscore. When designated Halo gamerpoint levels are reached, new Milestones are earned and awarded in the Career section. Players begin at Milestone 1. As new Halo achievements are earned players level up their career milestone. Each additional Milestone beyond level 16 requires 100 gamerpoints to unlock; earlier Milestones require fewer.
|Milestone||Additional Req'd||Total Req'd|
There were originally 40 milestones available at launch. It currently takes 8900 Halo Gamerpoints to reach the maximum milestone 100. All those on a player's friend list are able to view the player's milestones.
|Date||Max. Level||Req'd||Achievements||Total||% Req'd||Event|
|Nov. 5, 2009||40||2900||184||3950||73.4%||Launch|
|Jan. 6, 2010||50||3900||184||3950||98.7%||Title update|
|Sept. 8, 2010||60||4900||233||4950||99.0%||Halo: Reach added|
|Nov. 30, 2010||60||4900||240||5200||94.2%||Noble Map Pack added|
|Mar. 15, 2011||60||4900||243||5350||91.6%||Defiant Map Pack added|
|Nov. 15, 2011||75||6400||297||6650||96.2%||Anniversary added[note 1]|
|Nov. 6, 2012||75||6400||346||7650||83.7%||Halo 4 added|
|Dec. 10, 2012||75||6400||354||7900||81.0%||Crimson Map Pack added|
|Feb. 25, 2012||75||6400||364||8150||78.5%||Majestic Map Pack added|
|Mar. 28, 2013||95||8400||373||8400||100%||Castle Map Pack added|
|Jul. 15, 2013||100||8900||403||9050||98.3%||Champions Bundle and Halo: Spartan Assault added[note 2]|
|Aug. 29, 2013||100||8900||413||9150||97.3%||Spartan Assault title update Operation F added.[note 3]|
 Unlockable Items
 Avatar Awards
Halo Spartan EVA Helmet - Make it into Career Milestone 50.
 Halo: Reach Armor Unlocks
Military Police: Base - Career Level 15. Earn the The Soldier We Needed You To Be achievement in Halo: Reach.
Military Police: CBRN/HU/RS - Career Level 20. Earn the Pink and Deadly achievement in Halo 3: ODST. Must have Military Police: Base.
Military Police: HU/RS/CNM - Career Level 25. Earn the Fear the Pink Mist achievement in Halo 3 and the A Spoonful of Blamite achievement in Halo: Reach. Must have Military Police: CBRN/HU/RS.
CQB: Base - Career Level 20. Earn the Folks Need Heroes... achievement in Halo: Reach.
CQB: HU/RS/CNM - Career Level 25. Earn the Campaign Complete: Heroic achievement in Halo 3: ODST. Must have CQB: Base.
CQB: UA/HUL - Career Level 30. Earn the Campaign Complete: Legendary achievement in Halo 3 and the Gods Must Be Strong achievement in Halo: Reach. Must have CQB: HU/RS/CNM.
UA/Base Security [W] - Career Level 30. Earn the Yes, Sensei achievement in Halo: Reach.
- ^ Includes: 44 Halo: Combat Evolved Anniversary achievements, 7 Anniversary Map Pack, 3 Defiant Map Pack achievements
- ^ Halo: Spartan Assault achievements are duplicated: they appear once as on Windows 8 platforms and again on Windows Phone 8. Each contains the same 20 achievements worth 200 gamerscore, which double up to 40 achievements and 400 gamerscore.
- ^ Includes 5 achievements worth 50 gamerscore (duplicated to 10 and 100).