User blog comment:GeneralLeumas42/Boss battle 7/@comment-29967753-20170908102143

i beat AO Batman in a sort of cheeky way. The setup used is as follows:

lv 50 elite 2 Arkham Knight with +10 Lexcrop Chestplate/Helmet (both evolved), and the +10 custom rifle (thingy meant to be equipped by Arkham Knight) The stats at the time was 13k damage and 26k health. (50% crit chance, 250% crit damage, does around 4k per heavy)

lv 50 elite 3 Teen Titan/Raven with the evolved cape. (just pure damage and about 25% crit chance)

normal joker (the one bought with credits, nothing equipped).

Of course, the joker goes first and dies after using the second special attack, Arkham Knight switches in and uses second two times (proven to do around 120k damage without blocking and  full crits), Raven switches in and proceeds to do the same (does around 59k damage based on the stats, but it sometimes crits and i wasn't able to calculate how much damage was done).

Each character had at least one of their second special attacks blocked once, and Raven's passive finished the boss off (around 30k damage).

Hopefully this gives you some ideas on other ways. (please ignore the decapitalized "i"s)