Activate all 24 Shock Machines. Each Zone has a different number of them, if any. 3 Zones, 2 Towns, and 5 Labyrinths don't have any.
-Island West/East (White): 0
-Tour Route (Purple): 0
-Mossy Biome (Green): 3
-Service Area (Yellow): 0
-Laboratory (Light Blue): 6
-Deep Sea Domain (Dark Blue): 1
-Sunken Shipyard (Orange): 3
-Mining Site (Pink): 2
-Armor Town: 1
-Labyrinth 5 (Squid Pit): 8 (unmissable)
-Other Towns/Labyrinths: 0