Normally, there is a main
objective to
destroy the enemies» army as well as some
side objectives which grant you extra money after finishing a mission.
Adding more variety to the experience are the different mission
objectives, ranging from
destroying Xenos nests, activating certain devices and more, and some randomized special events, such as special Xenos that are very difficult to defeat, hordes of Xenos assaulting players from all
sides and more.