In each installment of the previous Halo games, skulls have been hidden as Easter eggs to unlock special abilities or more challenging game modes? What are all of the skulls for Halo 4, and where are they located?
The locations of all the skulls
halo-4
Best Answer
There are no skulls on Halo 4 (similarly to Reach, they are unlocked from the beginning).
However, here are the names and what they do from this source. I hope this is useful.