Here is the full list of all 20 Tile Lands achievements.
Discover the 'Power Station' building
Discover the 'Lumbermill' tile
Discover the 'Factory' tile
Discover the 'Park' tile
Discover the 'Quarry' tile
Discover the 'Power Line' tile
Discover the 'Wasteland' tile
Discover the 'City' tile
Discover the 'Town' tile
Discover the 'Oasis' tile
Discover the 'Volcano' tile
Discover the 'Oil Rig' tile
Discover the 'Fishing Village' tile
Discover the 'Lake' tile
Discover the 'Wind Turbine' tile
Discover the 'Lighthouse' tile
Discover the 'Temple' tile
Discover the 'Pirate Village' tile
Discover the 'Marshland' tile
Discover all tiles in the game