The Washington Add-on for American Truck Simulator has 8 achievements.
Use a ferry to cross the water (requires Washington DLC)
Discover every city in Washington (requires Washington DLC)
Deliver a cargo to an aerospace company in Washington (requires Washington DLC)
Deliver a boat to a marina in Washington (requires Washington DLC)
Deliver a cargo to both port terminals in Washington (requires Washington DLC)
Drive through both Seattle tunnels (requires Washington DLC)
Drive through the forest road to timber harvest in Bellingham (requires Washington DLC)
Visit Mount St. Helens, Grand Coulee Dam, Mount Rainier (requires Washington DLC)