Full Game Walkthrough...

Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Architect	Unlock twenty-five buildings.
Atrium	Reach the Ark with the Atrium.
Belfry	Reach the Ark with the Belfry.
BigBloatoad	Defeat the boss BigBloatoad.
BigTreeman	Defeat the boss BigTreeman.
Caravan	Reach the Ark with the Caravan.
City of Ashes	Reach the Ark with the City of Ashes.
Complete the Ark	Complete the Ark with ten cities.
Cultists	Defeat the boss Cultists.
Expert mode	Reach the Ark in Expert mode.
Great Dragon	Reach the Ark with the Great Dragon.
Hard mode	Reach the Ark in Hard mode.
Invincible	Reach the Ark without the Hero dying.
Mason	Unlock ten buildings.
Master-at-arms	Unlock twelve weapons.
Medieval Fair	Reach the Ark with the Medieval Fair.
Mirror City	Reach the Ark with the Mirror City.
Nightmare mode	Reach the Ark in Nightmare mode.
Normal mode	Reach the Ark in Normal mode.
Propaganda City	Reach the Ark with the Propaganda City.
Road of Ashes	Complete the Road of Ashes.
Road of Elderwood	Complete the Road of Elderwood.
Road of Ice	Complete the Road of Ice.
Road of Sands	Complete the Road of Sands.
Royal Mausoleum	Reach the Ark with the Royal Mausoleum.
SpiderMama	Defeat the boss SpiderMama.
Ultimate Hero	Buy 120 meta-upgrades.
Urban Planner	Unlock fourty buildings.
Veteran	Unlock six weapons.
Worker City	Reach the Ark with the Worker City.