Rookie (achievement)

This page is about the achievement. For the ODST nicknamed "Rookie", see Jonathan Doherty. For the soundtrack, see The Rookie (music).

Rookie is an achievement in Halo: The Master Chief Collection. It is unlocked by completing the Halo 3: ODST campaign on Easy difficulty; it will also be unlocked if the player completes the campaign on a higher difficulty. The achievement is worth 10 Gamerscore.

Trivia
The Master Chief Collection is the first Halo game with achievements specifically for completing campaigns on Easy.