Demon (Halo 2 achievement)

This article is about the Halo 2 Vista and Master Chief Collection achievement. For the Covenant term, see Demon. For the Halo 3 achievement, see Demon (Halo 3 achievement).

Demon is an achievement in Halo 2 for Windows Vista and Halo: The Master Chief Collection. It is unlocked by completing any Halo 2 campaign level without dying on Normal difficulty or above.

In the PC version of the game the achievement is worth 25 Gamerscore and is represented by a flame, with the head of the Master Chief on top. In The Master Chief Collection it is only worth 10 Gamerscore and is represented by a screenshot of the Master Chief aboard Cairo Station.