Skulltaker Halo: CE: Fog
Skulltaker Halo: CE: Fog is an achievement in Halo: The Master Chief Collection. It is awarded for finding and walking over the Fog skull in Halo: Combat Evolved Anniversary remastered mode on Assault on the Control Room. The achievement is worth 5 gamerpoints and can be unlocked on any difficulty.
After crossing the first bridge and taking the elevator down to the ground floor, the skull will be on a raised platform in the center of this room and will be surrounded by fog. It will require a grenade jump to reach it.