Select the Counterfeit job and choose any difficulty you like. The easiest way to do this I found was to talk and follow the guy down into the basement of the house. When it's just you and him alone in the basement put on your mask and kill the man and bag up his body using body bags you have. Carry the body bag and go back to where you were first talking to him in the garden and throw the body bag onto the grill and this will unlock the achievement.