You have to be willing to occasionally dump half your earnings from a boss kill into vials. I only ran totally dry when fighting Mh.icolas
Wait whaaaaa? Micolash put up a fight for you? That dude pretty much played Hide and Seek with me for a few minutes, then ran into a room where he just let me beat him up, with him only using some tentacle punch that had a bit of range. Micolash felt like Pinwheel from DaS in that he was a joke? I wonder if it's different for others or if Insight has something to do with that fight now, it was a strange one.