Aliens: Colonial Marines Wiki Guide

Let's Rock!

Let's Rock!
Kill 10 Xenomorphs in a game with the M56A2 Smart Gun

This can be done in either Campaign or Multiplayer, but it's easiest in Campaign. In Multiplayer, you will have to find a Smart Gun on select maps in select locations, then kill 10 Xenos before the game ends! However, in Campaign, a Smart Gun will be given to you, and Xenos will be plentiful and easy to destroy.