Here is the full list of all 9 The Last Town achievements.
Wealth reached 1 million.
Wealth reached 10 million.
Wealth reached 100 million.
The first victory in a battle.
Take part in 100 battles.
Take part in 300 battles.
Pass the 30th layer of the weird tree hole.
Perform 100 times of Gem Synthesize.
Perform 10000 times of Gem Synthesize.