I was going for a monument to all my sins and i did all the campains ON LEGENDARY ALONE. It didnt give me the acheivement and i swaer if i dont get it im gonna die! there was a problem with the package…i went all the way up the rally point bravo,but banshee problems made me restart from rally point bravo,do i have to do the mission on the same save? did it mess it up because i resarted at a rally point???