Tour of Duty (Halo: The Master Chief Collection achievement)

From Halopedia, the Halo wiki

Tour of Duty is an achievement in Halo: The Master Chief Collection. It is unlocked by completing a game in every one of the original six updated Halo 2: Anniversary multiplayer maps: Bloodline, Lockdown, Shrine, Stonetown, Warlord, and Zenith. The three Forge canvas maps (Awash, Nebula and Skyward) are not required, nor is the final anniversary map, Remnant, which was added in post-launch DLC. It also unlocks the "Assault Rifle" Multiplayer Emblem.

The achievement is worth 10 Gamerscore and can be unlocked in both matchmaking and custom games.