The Moon Hat had originally allowed players to earn LUX, an exp point used for Luna, by finishing the course in 1:30 or more and by beating 2-4 players. But since the game is gone, this hat is currently useless. You can earn this hat by beating Redemption by cooldude90.
See Also Edit
|List of Hats(Portal)|
|Kong Hat-EXP Cap-Propeller Hat-Santa Cap-Crown Hat-Cowboy Hat-Party Hat-Top Hat-Jump Start Hat-Moon Hat-Thief Hat-Jigg Hat-Artifact|