I don't know if this was intentional but the debris walkers quest for this update is repeatable. Seeing as it gives a good chunk of gunpowder as a reward I assume this was not intentional. I've already run it 3 times and seeing as the bandits are pretty easy to beat, especially if you grabbed both companions and the windmill's bane weapon, it could be a pretty big cut down on any money grind functions.
Currently there is charlotte if you were nice to her and successfully dated her. She is a mutant with a lot of strength and a very big hammer, so she hits kind of hard. As well as the classic dog companion. Though there is supposed to be a new possible companion in the next couple of updates, Robin, who you can find in Dr.Choppy's clinic.