When I was playing campaign with my two brothers to find the skulls I some how found fourteen of them instead of just the thirteen it was really weird I found it in the stage "Cortana" if you go into that big room where you can fall off easily and where you are suppose to blow or do something to that big pillar in the middle. There is a extra skull on that level all they way on the top of the ledges you have to jump on to the little things sticking out of the walls to get up there then it is on one of the thin ledges poking out from the bigger ledges that go around. it didn't do anything special I don't think and it didn't show anything on my list of skulls either. Maybe it dose something and maybe I didn't notice but I just wanted to share this with you guys.
I am sorry for posting this topic twice if you may close this topic this would be great I am terribly sorry.
I am sorry for posting this topic twice if you may close this topic this would be great I am terribly sorry.