Here is the full list of all 48 Conqueror's Blade achievements.
Disband ten units.
Earn the badge "The Phlegethon Flows" three times.
Craft a piece of Legendary equipment.
Equip some horse barding.
Kill 500 Heroes.
Kill 8,000 enemy troops.
Reach Level 60.
Earn the badge "Make It Happen" three times.
Disband any unit.
Earn the badge "Overthrown" three times.
Kill 200 Heroes.
Kill 3,500 enemy troops.
Reach Level 40.
Craft a piece of Rare equipment.
Craft a piece of Epic equipment.
Unlock 10 units on the Unit Tree.
Kill 100 Heroes.
Own ten units.
Kill 2,000 enemy troops.
Earn the badge "A Deadly Century" ten times.
Craft a piece of Uncommon equipment.
Craft a weapon for the first time.
Earn the badge "Noble Cause" three times.
Reach Level 20.
Earn the badge "No Quarter" five times.
Switch your default warhorse.
Collect three warhorses in your stable.
Earn the badge "Grand Bloodbath" five times.
Earn the badge "Drop Dead".
Earn the badge "God of War" four times.
Kill 10 Heroes.
Unlock all the peasant units.
Kill 5 heroes.
Kill 20 enemy troops.
Kill 200 enemy troops.
Earn the badge "A Deadly Century".
Earn the badge "Shatter the Ranks".
Earn the badge "Hat-Trick".
Get a badge "Quad Kill".
Earn the badge "No Quarter".
Create your first unit.
Own three units.
Defeat Valen and his troops.
Craft 100 pieces of Uncommon equipment.
Destroy every target on The Strawman's Challenge in between 20 and 25 seconds.
Earn the badge "Echoes of Achelous" 15 times.
Earn the badge "Cut a Swath" 30 times.
Craft 100 pieces of Rare equipment.