Fast Skullcrusher and Tower
241 - Tower
For UNM sets in round 6, for NM sets by round 10
For UNM, use Tower's block damage and Skullcrusher's counter attack right from the beginning. Full auto after that.
For NM, it's the same, but on turns 8 and 9 you must manual a one turn delay on their skills and then they will fall back in sync.
The trick is getting the stun to land on Skullcrusher. He must have SOME HP or the CB won't target him - easiest way is to give him 1 set of Immortal gear, though it's possible without by using the Lifedrinker Mastery and having high crit rate and damage.