Oh, you mean to co-operate Paralyzes for free kills.
Well, that's not difficult at all, but fair enough, I guess. Protip: absolutely do not use DoTs, and keep debuffs to a minimum so that both (or more) players can see Paralyze buff succeeding or failing.

Either way, such a tactic won't ultimately get you anywhere. It isn't efficient until you reach the point where two people can't just AAB their way through something, and the level where that happens is... extremely high. If your tactic is to practice Paralyze trains, chances are you'll lose to just 1-2 guys who have way too much free time and resources on their hands.