Here is the full list of all 26 Silk achievements.
Complete the Rebel
Complete the Traveller
Complete the Warlord
Complete the Noble
Complete the Travller with at least 70% Mastery
Complete the Rebel with at least 70% Mastery
Complete the Warlord with at least 70% Mastery
Complete the Noble with at least 70% Mastery
Complete the Traveller with 100% Mastery
Complete the Rebel with 100% Mastery
Complete the Warlord with 100% Mastery
Complete the Noble with 100% Mastery
Hire seven Advisors
Hire from all five Cultures
Hire a second Guide
Hire three Merchants
Hire three Soldiers
Hire three Ritegivers
Visit Nemrut Dag
Visit Dura Mithraeum
Visit Uruk
Visit Nagara Vihara Monastery
Visit the Great Flame of the Exalted, Great Flame of Fortune, and Great Flame of the Stallion
Visit Karakul Kurgans
Visit Stone City of Varshadeh
Visit all seven unique locations