2 things:
1) Yesterday and earlier today I was getting strange "hiccups", my character would follow up clicks with repeated clicks on the same place (it even killed me once or twice). It was very noticable and strange, but I don't know how to describe it better and it seems to not be happening now, so I'm putting it here in case someone else has been experiencing them. Something on my end being wrong might be a possibility, but I'm using the same mouse and the same laptop and everything is fine, while yesterday the game was quite unplayable due to it.
2) The Unstoppable badge keeps showing up in every sucessful run of Cursed Oasis for me, and I never kill the Wraith Boss, and I doubt I kill all the high level enemies too, because most of my CO runs are done with guys who kill the boss using Pissorf at low levels. I wouldn't be reporting it on "just a hunch":
This guy didn't kill anything above lvl 7 and got unstoppable, but this has been happening all the time. Or am I misunderstanding something about the Badge?