Excellent.
This is an excellent game. Great graphics, plays smoothly (though performance seems to degrade over time) and a completely over-the-top handling of gameplay that in general makes it a fun play.
However, I do have two major complaints.
1) Detection of attacks is way too sensitive. I can be trying to do a long series of normal attacks when suddenly the samurai executes a slash in a random direction--or worse yet, a cloak spell--just based on some natural shifting in the mouse.
2) The screens that appear at checkpoints end up causing far more graphics lag than they probably should.
Overall, great game. Just needs a little work in the control department to make it perfect.