Quoted from hank527:Final mode should be battle for man kind.
Good mutant vs bad mutants when you make a shot you defeat a bad mutant and when you miss a hero falls.
Start with a hero vs X villain. miss the shot and then the next hero is up. Make it the hero stays and the next villain is up. Once all hero's are gone the mode is over. Once all villains are defeated you win and man kind is safe
That actually sounds pretty awesome!