if you really need a Diablo-type game, this may satisfy you; but only if you don't want to play Diablo again.
there are three characters to choose from. a girl: very fast, lots of mp (or whatever they called it), hard to hit, does very little damage, has very little life. a regular guy: not as fast, not as much mp, has more life and does more damage. then a really big guy: slow, much less mp, does lots of damage and had lots more life. the characters are very different and determine how you play the game. each can be fun so there is a little replay value to be had, but only if you really want to play as another character.
the combat uses martail arts moves instead of your standard magic attacks. this is a pleasant inovation. the only tricky part of it is a bad aiming system. you tend to miss the enemies you have selected to hit so you end up wasting mp. this is, firstly, extremely iratating and, secondly, hazordous to your character.
the second inovation the game has is an expansion of the runes available for use in Diablo 2. in order to upgrade your weapons and armor, you need to collect and place runes in them. the runes make up alot of the loot you gather. this was a nice change at first, mainly because the different runes change how you look, but comes off as a pretty useless inovation. they needed to do more with it for it to be a truly good touch.
what brings this game down is the stiffness of the story, the stiffness of the characters and world (even though it's 2-d your characters shouldn't move like stick figures), and a terrible boss set up. the bosses in this game are easily the hardest i've ever faced. it is totally ridiculous. you go through the game fighting all these guys and it can be a challenge at times, which is good; but then you come to a boss and he not only has an absurd amount of life, he also kicks the crap out of you. and it doesn't matter how strong you get. they always kick the crap out of you. i was happy when i only had to die twice to kill one of these guys. the rest of the game is fun enough for a seven, but the simple fact of an everest size spike in difficulty of bosses ruins alot of it.
if you feel a need for an asian themed game, this is a decent one; but if you want a hack-n-slash, go with Sacred.