1. Terraria Achievements
  2. Mastermind achievement
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Mastermind achievement in Terraria

Mastermind

Defeat the Brain of Cthuhlu, an enourmous demon brain which haunts the creeping crimson.

Mastermind0
Online/Offline - These achievements can be obtained in either an online or offline game mode.Single Player - These achievements can be obtained by a single player.Cooperative - These achievements can be obtained by two or more players in a cooperative game mode who have met the achievement requirements.

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