The Sandman's Been Here

 is an Achievement.

Objective

 * Complete the following Achievements
 * Full of Spice
 * Go Without Desert
 * Dunelight
 * Under Ohwymi's Sun
 * What is the Corporation Looking For?

Rewards

 * 20 Achievement Points
 * Level-Based XP (Maximum: ?)
 * 87,960 Kamas
 * 1 Ancient Ohwymi Costume