Pretty short game.
Maybe it's great for a first protect, but there is no depth in it. Just follow the linear path, collect whatever lies on the floor and after choose one of the three endings, which don't matter at all. Interact with every monster with no consequence whatsoever.
And maybe open for yourself something about Dr. Jian, if you haven't spotted it a mile ahead.
Art is OK, somewhere stylish in scenes. Although, the music is awesome match, it certainly creates the atmosphere for the game.
Thus, despite the game's disadvantages, still worth the time played it.