So I checked out the test realm and had a couple duels using my barb. Here are a few observations: 1. The arena mechanism is lame. When you kill someone, they res with full life a few seconds later while you are stuck with whatever you had left. I suppose this is OK for jumping back into a free for all, but they ought to do something like refresh the life of the last player standing if everyone else is dead. As it stands now, your reward for winning is likely being the first one killed in the next round. 2. Throwing works fairly well. I actually managed to tank and kill a DH repeatedly while throwing (after adding a stormshield and a justice lantern). 3. WW kills pretty efficiently, too, as long as you have a fury generator (I went with unforgiving in place of nerves of steel in the standard build). 4. Stun skills also work pretty well. Ground stomp seemed to stun for quite a while when I used it with my throwing build. 5. Monks are pretty tough in melee. The one monk I saw (granted he was lvl 100 paragon, so he probably had pretty good gear, too) was very tough. The monk might end up being the best melee dueler. He left the game before I got the chance to try throwing against him.