I've had it for years now, but I'm sitting down and trying to get through The Evil Within. And I can say...it was...worth it? Maybe? Question mark?
Other than the fact that it seems like it stole a bunch of stuff from Resident Evil 4 and Dead Space (it even has that on rails cart ride with enemies that pop out to either side of you like a shooting gallery, just like Dead Space), it suffers from not being all that scary (yes, even despite all those reactions they sold the product on) and the last few levels being kind of unnecessary. In the early game, the chapters are fairly short, tense, and set in places that are visually interesting with plenty of weird enemies. Then you get to the cityscape levels, where all of a sudden the chapters take much longer to get through and seem to be there in order to make the game reach that mythical "11-20 hours" mark. I spent an hour on a boss fight only to realize I just didn't have enough stuff to make it through the fight and had to reload a prior save just to get a few items I had somehow missed the first time around. Also, one of the big no-nos for me in Survival Horror games is when enemies suddenly start picking up M-16s and start shooting at you. I just can't buy monsters that barely know how to walk or swing an axe suddenly have the wherewithal to aim and fire a gun with any kind of accuracy. Sure, next time through I'll probably play it a little smarter, now that I know a lot of the stuff in there and how to fight it (and once I'm done I can actually use all that green goo upgrade stuff, since I'm opting not to use it just yet), but I really do think it's a game that suffers from just being unnecessarily long and stretching a 8-9 chapter story over 15.
It isn't a bad game, though, in all honesty (despite a sort of cheapness in how you can be killed), and it has some great visuals. That field of sunflowers and the barn is absolutely stunning, and if anybody ever steals anything from this game, it should be how to make more scenes like that. It's very atmospheric.
EDIT: Finished the Main Game, and I remain very much of the opinion that I'll like it more on subsequent playthroughs. Playing with No Gel upgrades makes the game way harder than it needs to be. However, I began one of the DLC, The Assignment, which follows the adventures of one of the other characters, and I like the DLC MUCH more than the original game. Rather than being a half gun-fest/half-not really sneakfest, this one is all about sneaking and enemy patterns, and I found it more to my liking. It rewards you for being stealthy, especially since you have no weaponry for much of it, and that, I think, makes it less an action game based on luck and more about using your head to solve a problem, which is nice. It makes a great addition to the game...though the thing is, I still have to go through the main game on Akumu difficulty (upgrades and ammo are harder to find, one hit kills you, enemies cannot be stealth killed easily, if at all). It sounds bad. Very, very bad.