5 chest speed run: http://www.youtube.com/watch?v=FfGVL2hUIOY

after making some slight adjustments to the batraal kill we completed a five chest speed run. after some minor testing we found ws>ws>magic br did about the same dmg as spamming banish and scourge II. also, we kept an arc, thm and con to continue dmg on batraal while the three other cons nuked down the second group of skeletons. the plan for the third group of skeletons was to aggro and group them all and have all mages chainspell sleep in hopes that it would stick given enough tries and then focus on killing batraal. this sort of worked as seen in the video.

obviously this was a very sloppy kill, which we think illustrates there is a bit of leeway with your party setup in completing this. also, four archers instead of mainly mages can kill the bosses quicker, but we found it was much slower running through the dungeon and instead went mage heavy. we also had varying levels of success landing dots. sometimes all stick, other times only one or two. we think that two arc and a thm on dots would probably work best for constant dmg on batraal.

thanks to everyone who responsed with any ideas. if anyone wants more info we can write up a more detailed strategy.