Here is the full list of all 15 Demolition Engineer achievements.
Unlock all styles of painting
Destroy 100 buildings
Earn 1000 coins
Earn 500 coins
Upgrade all stats to the max
Complete the game
Complete level 5
Complete level 4
Destroy 30 buildings
Complete level 3
Complete level 2
Repaint the machine
Earn 100 coins
Complete level 1
Destroy your first building