Evil Within is the most intense game I've played this gen, aside from PT (although I'm not sure that should count, given PT's limited scope). Evil Within is also a horror fan's wet dream (...nightmare?), since it combines pretty much every flavor of horror into one cohesive whole, with that distinct Mikami style bringing it all together.
You have Western horror and Eastern horror, you have ghost stories and torture porn, you have it all. Only downside is the human characters aren't the most memorable (villain aside), but they have attractive designs, and unwittingly say and do things that are charming in a goofy sort of way. The monsters themselves are hands down some of the best in the biz, both videogames
and film. Creatures like Laura and the Keeper are like iconic movie monsters that could easily carry a game/film all on their own. Best of all is the game balance — starving you for resources in all the right ways, so that I literally defeated a boss in Ch. 15
with my last bullet.
I do wish it was a bit "cozier" like Resident Evil — Evil Within can be unremittingly bleak, almost soul-crushingly so — but it's something of a miracle that there's a triple-A horror game with an adventure of this magnitude on a modern-day console. In many respects it's like a sequel to RE4, from its pacing and balance to its exquisite variety of locales and monsters.