Bandanna should only be unlocked after completing all of the campaigns on Legendary. It made the CEA campaign so damn easy on Legendary. I WILL use it considering I have the option. I just think it's kinda bs. I nade spammed the library with ease. It honestly felt like I was playing the game on super easy mode. Maybe turn off achievements when these pre-order skulls are in use. Their better be a way to unlock all of the pre-order skulls without pre-ordering from everywhere.....