I bought it at Wal-Mart the other day. First off, this game is completely badass. If you've ever wanted to be a badass in a videogame, play Metal Gear Solid or Ninja Gaiden.
Secondly, this game is hard as HELL. The only "hard" aspect of it is the fact that even on the normal difficulty, healing items are few and far between. The save points are also waay too far apart in some areas. I find myself going through half the level, and then backtracking just to save again.
Trust me, after almost beating the entire level and then dying, the 2-minute walk back to the save point is worth it.
I'd personally like more healing items. I know you can buy them, but they're expensive, and the yellow orbs should be used for upgrades instead of healing items! I've got ONE upgrade (fire magic). I've spent the rest of my orbs on healing items, and I have none left right now.
The game gets funner and funner, but it seems to get harder as well. So far, I'm enjoying it a LOT. I recommend it to everyone, but be prepared to get your ass kicked quite a bit.
-Lasereth