To let everyone know i hope you know that if you want to get the skulls you want you have to start the level from the begining no matter where they are!
this is a crazy article i got 10 skulls out of this. im working on that iwblahblah skull tilt and cowbell. and fyi u dont have to be on legendary to get skulls and u dont have to start from the mission start.
When I tried to get thunderstorm, it didn't show up. I followed the directions but it wasn't there. Anyone know why and anyone know how to make it appear?