I wasn't trying to go out of bounds on my second playthrough of this game and I found myself out of bounds really easily. That is game breaking. I hear people who talk about "just switch weapons" as the mechanic for getting past the seemingly random invincible enemies (and it does work, I definitely found that myself) but there's seemingly no rhyme or reason for it. Enemies just randomly become invincible to a weapon out of nowhere. I get that it's a horror game and not everything is a bug unless the developer says so, but the developer has also admitted to not playtesting the game whatsoever. That's unforgivable.