Kill 50 enemies with the MP-50 in any ranked Multiplayer games.


On the Campus map, if you are in the middle on the bottom level where the Type-7 Particle weapon is, with the conference room on your left, go up the stairs ahead of you and to your right. There is a doorway on your right, go through that and make a u-turn to your left. The MP-50 is directly in front of you under the stairs. Simply kill an opponent 50 times and you will get this achievement.