Businessman

Businessman is an achievement/trophy in Metro Last Light.

Overview
This achievement is awarded for making 100 purchases at weapon or equipment vendors. It can be easily gained at any equipment vendor on any normal difficulty (Ranger Mode increases the buying price of everything) by repeatedly buying and selling throwing knifes, since they are bought and sold for 1 military-grade rounds each, therefore no MGR is lost. If done legitimately, you will not achieve this until far into the campaign, if at all, without making regular purchases whenever you can.