When in the campaign lobby, press X to bring up the settings menu.
you have to restart the game and activate skulls from the main menu
I'm not sure how to use them, but when you activate a skull, I think it unlocks extras in the game.
When you have the skull menu brought up, click on the skulls you want to activate to activate them. Simply, move the control stick to the skull, and press the button.
The skulls are used to activate cheat codes, such as recovering health when you punch an enemy. You activate these by pressing X at the mission selection menu.
Sorry there arn't any, The only skulls are in "Halo 3" Which are used in "Halo 3 O.D.S.T."
The skulls on halo 2 and 3 activate funny effects and mostly make the campaign mode more challenging for the most experienced players like me. wow someone has a silver spoon up his ass
They are skulls. idiot.
you can get all of the skulls on multiplayer. =)
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 .
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