The True King is an achievement in Halo: The Master Chief Collection. It is unlocked by earning a total of 250 King of the Hill mode-specific medals in multiplayer matchmaking. The achievement is worth 10 gamerpoints.
Certain games in the collection are better for earning this achievement than others, as not all games award the same number of King of the Hill medals. Halo 4 has the most with fourteen unique medals, followed closely by Halo 2: Anniversary with twelve. Halo: Combat Evolved and Halo 2 only award six medals, while Halo 3 and Halo: Reach only award a single medal, Hail to the King.