Here is the full list of all 8 Village Dealer Simulator achievements.
First sale to a buyer in the market
Successfully negotiate 50 times
Accumulated transactions at the market reach $1,000,000
Purchase a new Supreme Pickup vehicle
Accumulating transactions 50 times with farmers
Accumulating transactions 50 times with ranchers
Successfully sold 1,000 kg of commodities to Sophia
Successfully sold 1,000 kg of commodities to Ryan