Here is the full list of all 69 Golden Rails: Harvest of Riddles achievements.
Built 70 railway sections.
Planted 25 gardens.
Completed Extra Levels.
Completed Extra Levels with 2 stars.
Completed Extra Levels with 3 stars.
Planted 20 gardens.
Collected 400 vegetables.
Completed Finale.
Completed Finale with 2 stars.
Completed Finale with 3 stars.
Found all the owls.
Got all level-2 achievements.
Got all level-3 achievements.
Completed 5 mini-games with 3 stars.
Found all the clues.
Collected 200 tools.
Collected 500 letters.
Completed Ghost Town.
Completed Ghost Town with 2 stars.
Completed Ghost Town with 3 stars.
Built 100 houses.
Collected 200 vegetables.
Planted 10 gardens.
Completed Prairies.
Completed Prairies with 2 stars.
Completed Prairies with 3 stars.
Collected 100 tools.
Found 30 owls.
Built 50 railway sections.
Arrested 50 bandits.
Collected 200 letters.
Completed Warehouses.
Completed Warehouses with 2 stars.
Completed Warehouses with 3 stars.
Got all level-1 achievements.
Completed 3 mini-games with 3 stars.
Collected 100 sticks of dynamite.
Arrested 30 bandits.
Completed Town.
Completed Town with 2 stars.
Completed Town with 3 stars.
Built 50 houses.
Collected 20 tools.
Found 5 clues.
Collected 10,000 units of iron.
Collected 10 letters.
Collected 50 sticks of dynamite.
Collected 10,000nits of money.
Completed Farmland.
Completed Farmland with 2 stars.
Completed Farmland with 3 stars.
Collected 10,000 units of wood.
Collected 4000 units of iron.
Arrested10 bandits.
Collected 10,000 units of food.
Collected 4000 units of money.
Collected 10 sticks of dynamite.
Built 10 railway sections.
Collected 4000 units of wood.
Built 10 houses.
Found 1 clue.
Completed a mini-game with 3 stars.
Found 5 owls.
Collected 10 vegetables.
Collected 4000 units of food.
Collected 100 units of money.
Collected 100 units of iron.
Collected 100 units of wood.
Collected 100 units of food.