Here is the full list of all 42 Blood of Magic achievements.
You've arrived at Auguston
Defeat and retrieve Jericho Ironblood's severed head
Defeat and retrieve Brawl Deathspike's severed head
Defeat and retrieve Grolt Stonetooth's severed head
Defeat Arcanist Phineas
Defeat Lord Ma'lik
Solve the mystery of the Ancient Obrodian Shrine
Recruit a Militia
Recruit a Scout
Recruit a Lumberjack
Recruit an Alchemist
Recruit a Forge Apprentice
Recruit an Adventurer
Recruit a Bard
Recruit a Spearman
Recruit a Crossbowman
Recruit an Enchanter
Recruit a Mercenary
Recruit a Rogue
Build an Alchemy Lab
Upgrade your Alchemy Lab
Build a Blacksmith
Upgrade your Blacksmith
Build a Barracks
Upgrade your Barracks
Build a Windmill
Build a Lumbermill
Upgrade your Market
Beat the Game
Complete "Taking Back Our Streets!"
Complete "Pulling Teeth!"
Complete "The Green Menace!"
Complete "Lumbernapped"
Complete "Burn the Tents"
Complete "Brothel"
Complete "On the Rocks"
Complete "My Son, the Hero"
Complete "Little Green Thieves"
Complete "Broken Shield"
Complete "A Dirty Experiment"
Complete "Flammable Material"
Complete "Rock Collection"