How To Unlock Skull Cheats: You can find Skulls hidden throughout the campaign missions. Halo Wars 2 Cheats Halo Wars 2 Unlockable Cheats Next Page: Halo Wars 2 Achievements Guide.Next Page: Halo Wars 2 Phoenix Logs Locations Guide.Next Page: Halo Wars 2 Skulls Locations Guide.Take a look at the cheats below… Index of Halo Wars 2 Guides: Here we will show you how to unlock all Halo Wars 2 codes with a cheats list that’s valid for the PC & Xbox One versions (where available). Looking for Halo Wars 2 cheats on Xbox One & PC? Here we’ll list Halo Wars 2 cheat codes and unlockables with tips for Microsoft’s new RTS game.