WAR + Any healer has enough DPS to nuke down any of the Maps as a 2-man team. We use our choco's to help us get the weekly 100 kills for our birds (Mine's rank 15, 10 attack/9 heal, friends is 9heal.)

The Vanu map in particular is rather violent, however. It's the only one that you're going to be not-sure if you'll clear in time, because for some reason they have REDICULOUS hp values and spawan in groups of 3-4 for 3 waves.

Take 3 people is my advice for your standard player. But if you got a partner you have faith in and a balanced comp (Don't try to do this with just DPS or healer + DPS, some of the mobs hit hard even on my tank) then you should have no problem duo'ing it.