Where would we be without our friends? Dead, in jail, enslaved by a horrible organization? It's hard to tell, but after running down a list of some of the greatest gaming duos we could think of, we're pretty sure those are some of the gruesome possibilities. Partnerships go a long way when it comes to keeping each other away from danger. And we could all learn a thing or two depending on if there were no betrayals involved. These 25 Most Ass-Kicking Video Game Duos are destined to go down in history as some of the greatest we've seen.