I'm holding out for Halsin on my Karlach playthrough, though keeping true to Karlach's hot-blooded flirtations until we get her engine under control.
I've actually turned on the passive 'non-lethal damage' for the entire playthrough (and playing on Honor mode) to see what happens. I generally take out anyone that isn't 'temporarily hostile' after the fight is over (reasoning is they refuse to surrender after being captured) but don't feel the need to execute the rest. Let's me loot them.Minthara is probably going to die this playthrough, I know there is a work around to not kill her and save the tieflings but that requires thought that a Barb waifu is unlikely to provide.