I think The Spy Who Loved Me is an awesome title.
However, I think Natalya for MI6 and Boris for Janus will suffice. The teams would take turns. One round, Mi6 is rescuing Natalya. At the round end, Janus will be rescuing Boris. Having both at the same time will just not work, because people will have to move their character plus stop the other team at the same time. Just take turns!
If the team rescues the character, they get "x" points. At the end of the game, the number of points are added up and the team that has the most, wins.