Pillar of Autumn (achievement)

Pillar of Autumn is an achievement in Halo: Combat Evolved Anniversary and Halo: The Master Chief Collection. It is awarded for completing the level The Pillar of Autumn on any difficulty. The achievement is worth 25 Gamerpoints in Combat Evolved Anniversary and only 10 Gamerpoints in The Master Chief Collection.

It is represented by the Roman numeral of "I" over a darkened version of Anniversary's logo.