In the first episode of the campaign, "Gas Station Robbery", use the following combinations:
Explore + City = Gas Station, Pawnshop, Pub
Explore + Gas Station = Cash Register, Jeep, Salesman Manny
Explore + Salesman Manny = Want to Buy Some Gasoline, Salesman Manny
Watch + Pawnshop = Money, Money
Money + Salesman Manny = Petrol, Salesman Manny
Pub + Petrol
The achievement should now unlock.