Kill 4 Enemies Simultaneously with a Single Explosion
Far Cry 4 QUAD KILL – Achievement / Trophy Guide
Before you go to this outpost, buy the RPG-7 which will cost you 160 000.
Travel to the Kyra Tea Weigh Station at (X: 345 Y: 377) and raise the alarm. Hide behind the wall outside but make sure they don’t lose you completely or the reinforcement won’t show up. Let the 2 cars pass and wait until they stop in the middle of the outpost. Shoot your RPG-7 between the cars to make sure one explosion kills them and not the explosion from the other car.