Here is the full list of all 18 Villagers achievements.
Tü tütü tüüütütütü, dance!
Few Villagers are better than none, though some more would also be fun.
More people are coming to town, now please don't let them down.
Your city is expanding! Take care, more people are demanding.
One hundred townsmen, this is a city! Having them starve would be a pity.
Home, sweet home, your townhall is built. You better prove worthy or they will speak guilt.
The raiders 've been stopped, the town is saved. You are the saviour, the path is paved.
You have completed Chapter 1
You have completed Chapter 2
You have completed Chapter 3
You have completed Chapter 4
You have completed Chapter 5
You have completed Chapter 6
A baby has been delivered
You have extended your Townhall
5 houses in your settlement
10 houses in your settlement
50 houses in your settlement