Officer Arachno

The Officer Arachno is an enemy in Xenoblade Chronicles that are members of the Arachno family. They can be found at level 11 Tephra Cave between Tephra Cavern and Vilia Lake.

Chests Rates

 * Wood = 74.3%
 * Silver = 24.8%
 * Gold = 1%

Wood

 * Materials
 * Arachno Ear - 58.8%
 * Insect Jaw - 41.2%

Silver

 * Crystals
 * Slow Resist I / Attack Stability I - 31.3%
 * Slow Resist I / Earth Cloak I - 31.3%
 * Weapons
 * Light Driver - 6.1%
 * Spark Lancer (2 slots) - 4.1%
 * Spark Lancer (3 slots) - 2.4%
 * Armors
 * Soil Boots - 8.6%
 * Light Top - 7.2%
 * Light Bottoms - 4.8%
 * Regnas Boots - 4.3%

Gold

 * Weapons
 * Brave Guarder - 10%
 * Arachno Driver - 5%
 * Unique Weapons
 * Flame Gear - 15%
 * Unique Armors
 * Steady Greaves - 51.5%
 * Pistis Cap - 7.7%
 * Graft Gauntlets - 6.5%
 * Messenger Shoes - 4.3%