Complex sentence: The Black List must use stealth to blow up either one of the targets with C4 to win or kill all the Global Risk soldiers, while the Global Risk mercenaries must defend the targets and shoot down any ghosts.
Split into simpler sentences: The Black List must use stealth to blow up one of the two targets with C4 to win or kill all the Global Risk soldiers. The Global Risk mercenaries must defend the targets and shoot down any ghosts.