i'm playing through the campaign and i wanted to see something i missed and restarted the campaign and set it to recruit just so i could get to the part i wanted to see. after that, i restarted it and tried to set it back to hardened, bit it won't let me raise the difficulty! i tried the rewind function and it kept me at easy. and replaying the mission only leaves you off at the end. it doesn't continue the campaign!
IS there a way to raise the difficulty? if so, how??? or are we screwed if we lower the difficulty?!