Bizarre. I've been 2 manning that fight many times with potd upscaled with just MC and Eder. Done it with from the top of my head with kindwayfarer/streetfighter, streetfighter/ascendant, nalpazca/devoted, devoted/assassin, streetfighter/wizard. The last one was tough, had to use the corner of the building to make the offscreen archer stop whacking me. Food up, potion up, drug up, throw a bomb. Eder has whiteleaf on him. Fight on the balcony where the mage is at. You can stealth there. Or get close enough, save/load, they do nothing till you talk to one of them. That way your only real annoyance is that archer guy offscreen plonking you. Mage can be bruteforced down fast, then arquebus guy. Rest are much less of a problem. Eder should have medium shield modal up and if done right he will tank the melee at the foot of stairs.
