it is simple first you have to find the skulls in the game when you do go to mission select and hit the x buttion (if you have xbox 360) then the list of skulls you found will be up there and just click on the one you want to activate .
You do not keep the skulls in Halo 2 they are a one level sort of thing.
Sorry there arn't any, The only skulls are in "Halo 3" Which are used in "Halo 3 O.D.S.T."
you can get all of the skulls on multiplayer. =)
They are skulls. idiot.
ok, go to youtube and type in "how to find all halo 3 skulls" then watch the video and get the skulls. yes, its that simple.
if you want to know where the skulls are all you have to do is go to youtube and put in "halo 3 odst mythic skulls" and it will show you how to get to them
find the skulls
There are no skulls in Halo Reach.
There is many silver skulls, look up a tutorial.
Find them your self
There are many Gold Skulls. Look up a tutorial.
http://www.halo3planet.com/halo-3-skull-locations/ is were I found them