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