In this video guide I will show you a quick and easy way to kill 90 cannibals. Close to the end of the YAMANTAU level you will fight a heavy with a light machine gun. Make sure you take it with you and save the ammo for the end of the level. Once you are leaving on the train a whole bunch of cannibal will pour out the door your facing. Just simply mow them down and get the achievement. If you don't just simply reload the check point.Or make a quick save before you get on the train.