Most people might not enjoy this game because of its sneaky/slow paced style. But fans of Thief should.
One noticible problem this game has is with the stages, they will quickly feel redundant and leave you with a sense of deja-vu. The variety comes with the lay-out of the enemies.
If you enjoy Ninjas in the classical stabby in the back sense, and enjoy slowing things down to be that classical stabby in the back kinda of guy, then you should enjoy this game.