Field Altrich

Field Altrich is a Unique Monster in Xenoblade Chronicles that is a member of the Tirkin family. It can be found at level 76 northwest of Crevasse Waterfall on Bionis' Leg, accompanied by a group of significantly weaker Tirkin. It can drop Tirkin Elder Medals, which are required for the "Replica Monado 4" quest.

Chests Rates

 * Wood = 0%
 * Silver = 0%
 * Gold = 100%

Wood

 * Materials
 * Tirkin Elder Medal - 73%
 * Tempus Glyph - 27%

Silver

 * Crystals
 * Lock-On Resist V / Chill Attack V - 25%
 * Lock-On Resist V / Paralysis V - 25%
 * Weapons
 * Will-o'-Wisp Staff - 5%
 * Forma Spear - 4.7%
 * Darkness Sickle - 4.2%
 * Meteor Staff - 2.8%
 * Armors
 * Rondine Bottoms - 11.4%
 * Z Speed Arms - 8.4%
 * Rafaga Boots - 7.6%
 * Rex Greaves - 5.9%

Gold

 * Weapons
 * Forma Spear - 6.4%
 * Hero Biter - 5.4%
 * War Blades - 3.6%
 * Unique Weapons
 * Calming Spear - 6.4%
 * Calming Biter - 5.4%
 * Omega Break - 3.6%
 * Unique Armors
 * Asura Arms - 11.5%
 * Asura Helm - 10.9%
 * Eclipse Gauntlets - 9.6%
 * Eclipse Boots - 6.5%
 * Advanced Books
 * Guard Shift - 14%
 * Tranquiliser - 9.4%
 * Final Cross - 5%
 * Air Fang - 2.3%

Trivia

 * It is the strongest Tirkin in the game.