I have a very hard time believing that anyone could beat the game without dying at all. If anyone here did (and that means without the use of any kind of mod) I sure would like to know.
Before anyone says anything, yes, I struggled on the easiest difficulty. Mostly because the Xeno. The working joes and othe people I could bypass but the xeno felt like a god. He killed me at least 100-120 times. I saw there's an achievement for beating the whole story without dying, I feel bad now lol.