Step7!
TAKE OVER THE WORLD.
SHOOT ENEMES INTO THE SUN
WITH A GREAT SLINGSHOT!
Ok complete all the vidmasters in the halo games called Halo3 and Halo 3 ODST.Most of the vidmasters need 4 people to complete. If you dont know what vidmasters are go to Acheviments on your xbox and on the games Halo3 and Halo 3 ODST
there will be a list of Acheviments on your screen scroll down or look around in your acheviment bar and look for the acheviments that say Vidmaster- and if you click on it.It will show what you need to do in the game to complete the Vidmaster acheviments.
[Edited on 05.14.2011 6:16 AM PDT]