I was browsing through the Steam achievements for Railway Empire (PC) and observed one called "Let's Go":
Let's go! First scenario completed successfully
I haven't gotten this achievement, but I have completed several scenarios successfully: I've almost finished the US campaign (still in the middle of "The West"), and have also beaten several scenarios on Free Play (The South as President; France as CEO; and a random map as Stationmaster), and also one of the Scenarios (Black Gold / the South)
What are the criteria for this achievement? Does "first scenario" refer to a specific scenario, or possibly the campaign?