You pick them up. The skulls can promote life or ammo. They can also make it harder to hurt enemies but if you kill the enemies with the skull you can unlock glitches and other weird stuff.
Skulls house brains.
because skulls are awesome!
There are no skulls in Halo Reach.
Search for Halo 2 skulls on www.youtube.com and there will be a selection of videos showing the wereabouts of the skulls or how to get them : )
you can get all of the skulls on multiplayer. =)
The Skulls was released on 03/31/2000.
The Production Budget for The Skulls was $15,000,000.
Skulls of the Shogun was created in 2012.
Skulls of the Shogun happened in 360.
Who Are The Skulls was created on 2002-05-14.
Soft Skulls was created in 2007.
Band of Skulls was created in 2008.