Please note that in the multiplayer beta of Halo: Reach is now available the new Invasion mode, which puts on the battlefield against 6 6 Spartans Elite for a total of 12 players in action. You can access it through the main menu of Matchmaking, select the appropriate library. Please note that the next and final rules that will be unlocked Generator Defense May 14, coinciding with the ' event that will also allow Xbox Live Silver member to try the beta of Halo: Reach.