A great game that is not for everyone.
The rest of the game's features are good without being outstanding. The one aspect that does stand out in my mind are the enemies. Some of them are extraordinarily creepy and really help to reinforce the dark atmosphere of the game. The counterpoint to this is that some of the item descriptions are quite entertaining and include obscure pop-culture references.
The game's M rating may be a bit higher than this game deserved. Aside from some of the ghastlier enemies, there isn't much gore to speak of and the attack animations are nothing extreme, but the story and subject matter is pretty dark. I wouldn't have any reservations about giving this game to most high school aged teens.
Overall, I would say this is a solid, well-designed, well-balanced, interesting and engaging game. I would recommend it to most RPG fans who have fairly good reflexes and like a dark, occult story. I am looking forward to playing the sequels.