I dont know, I had it relatively easy, it was just that massive damage I couldnt survive, Y U NO HAVE FAITH IN ME DEVELOPER?!
But what will happen now? not to be annoying or anything. xD I would just like to have a rematch with this particular boss.
(I also reloaded an earlier save file and played on easy.. but I felt like I was cheating so I just stopped playing all together.
Am eager to return tho.
) Also, gotta love the irony of the 1.4 "much easier" update that I found this bug.