Career milestones

Career Milestones were Halo Waypoint's overall measure of participation and performance across all Halo games released from September 2007 through 2014. Career Milestones were removed from the web version of Waypoint on October 13, 2014, and replaced by a simple Gamerscore total (which itself was discontined in 2021). They were still visible on the Xbox 360 version until it was shut down on January 13, 2022.

Only Xbox 360, Windows 8, and Windows Phone 8 achievements contributed to Career milestones. Halo 2 for Windows Vista and Xbox One achievements were not supported.

Description
Milestones were reached by attaining a certain level of Halo gamerscore. When designated Halo Gamerscore levels were reached, new Milestones were earned and awarded in the Career section. Players began at Milestone 1. As new Halo achievements were earned, players leveled up their career milestone. Each additional Milestone beyond level 16 required 100 Gamerscore to unlock; earlier Milestones required fewer.

There were originally 40 milestones available at launch. It took 8900 Halo Gamerscore to reach the final maximum milestone 100. All those on a player's friend list were able to view the player's milestones.

Avatar Awards
Halo Spartan EVA Helmet - Make it into Career Milestone 50.

Halo: Reach Armor Unlocks
Once specific Career Levels have been met, certain Armory Items could be unlocked but only after earning certain achievements in Halo 3, Halo 3: ODST, or Halo: Reach.

Helmet
Military Police: Base - Career Level 15. Earn 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.

Chest
UA/Base Security [W]  - Career Level 30. Earn the Yes, Sensei achievement in Halo: Reach.