Since there are a ton of unusual and just plain tough enemies, I thought it would be great if we could share information and ideas (like how the boss cheated) and how we won. It's become next to impossible for us guide writers to keep up with the research because of the sheer volume of bosses, and the fact that their 'cheats' don't always seem to be simple or straightforward. If you have any ideas, either about how you think a boss might cheat or how to deal with them, this is the place to share them!
Any information posted here might end up in a future guide... but guide makers, if you're going to use this information, please be neighborly and credit (and thank!) the people whose thoughts and ideas you end up using.
Example entry and my notes on Sato.
Sato is a main quest boss that you fight for Egg fo Yung (I hope I spelled that right) in order to get a tea deal on behalf of Marlybone.
His cheat is shadow-stepping to somewhere else on the board after every hit. I haven't found a type of hit that would not trigger the cheat yet (I did not test musketeer attacks). Test privateer aoes, companion with greater mojo, and melee attacks. I did notice that after awhile he stopped using shadow step all together at which point El Toro destroyed him quickly. My tip would be to pick companions with epics that are triggered by enemy movements or enemy attacks. First strike proved very useful as he would port before attacking.
(If you don't like taking notes, recording and posting the raw video to youtube and then here is very handy.)