Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Angel of Death	Plunged a total of 50 enemies into the abyss.
Apprentice	Score is 50,000 points or higher.
Executioner	Plunged a total of 20 enemies into the abyss.
Fellow	Score is 100,000 points or higher.
God of Crowns!	Earned all crowns.
Guardian	Rescued 15 of your own units from enemy fire.
Guardian Angel	Rescued 30 of your own units from enemy fire.
King's Choice	Earned 10 crowns.
King's Favorite	Earned 20 crowns.
King's Hero	Earned 30 crowns.
Master Builder	Score is 250,000 points or higher.
Monumental Construction	Built a bridge with at least 100 components.
Treasurer's Archenemy	Spent at least 100,000 on one bridge.
Treasurer's Favorite	Undercut crown budget by 3,000.
Treasurer's Friend	Undercut crown budget by 1000.