황금과 기계… 시계?

Missing, extremely new, or very obvious to obtain.

This achievement has no cultural references in the English and Chinese versions. It is likely specific to the game. It's a reference to Simulated Universe: Gold and Gears, which uncovers the mysteries of the events during the Mechanical Emperor's Wars and before #27 Rubert's death. "Gold and gear... Clock?" has the Trailblazer uncover the mystery behind Clockie turning rocks into gold. The achievement's title could also be taken literally with Gold as the rocks-turned-gold, Gear as the puzzles we solve to uncover the mystery, and Clock as Clockie.