The Heavy Cargo Pack Add-on for American Truck Simulator has 5 achievements.
Use truck scale or weigh station with gross vehicle weight of at least 175,000 lbs (requires Heavy Cargo Pack DLC)
Complete a perfect delivery (no damage, no fine, in-time) of a cargo from the Heavy Cargo Pack which is at least 1,000 miles long (requires Heavy Cargo Pack DLC)
Deliver first Heavy Cargo Pack job (requires Heavy Cargo Pack DLC)
Earn $100,000 on 5 consecutive Heavy Cargo Pack deliveries (requires Heavy Cargo Pack DLC)
Complete a delivery of all heavy cargoes in American Truck Simulator (requires Heavy Cargo Pack DLC)