Demon (Halo 3 achievement)
From Halopedia, the Halo wiki
Demon
Demon is a Halo 3 Meta-Game Achievement. It is earned when the player earns 15,000 points while playing the meta-game on Crow's Nest. This Achievement gives 10 Gamerpoints to the player.
It is represented by a blue circle with a horned skull. The name ties to the name given to Spartans, specifically John-117. The level is most likely given the name due to being one of only two levels to feature both types of Brute Chieftain (The other being The Covenant).
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