Check out the new trainer for Aliens: Colonial Marines. Escape mode is the competitive multiplayer mode where you can choose to be one of two factions-A marine soldier or a Xenos.
[video=youtube;ILWKPmHj63w]http://www.youtube.com/watch?v=ILWKPmHj63w[/video]
[video=youtube;ILWKPmHj63w]http://www.youtube.com/watch?v=ILWKPmHj63w[/video]