Skull Effect:Every enemy on the field now has double their normal amount of health.
Campaign Scoring Multiplier: 2x
Skull Location:The Mythic Skull is located near the start of the ninth level, Halo.
Begin by heading into the canyon, but stick the right wall. Very soon, you will notice that there is a turn to the right that is off the normal trail. Head a bit down this path, and the Skull will be sitting next to some rocks in the fog.