Halo: Campaign Evolved is a faithful remake of the original 2001 shooter, but with a few added changes, including three brand new levels. One of the new additions is skulls. The original game didn’t have them, and the Xbox 360 remaster had some, but this version has a whopping 39 Skulls to find–three per level. There are also three additional Skulls that are unlocked when you gain access to the Campaign Remix mode.