I don't like an installer running when I don't expect it, especially when I cannot 'x' out of it.
That being said, everything seemed to work well. I found the game difficult (I'm not very good at this sort of thing though) and I did not end up getting very far. I probably would have done better if the area of my attack was a little larger. Perhaps the cool down could be increased to balance that out, but I found it difficult anyways.
The animations looked pretty smooth and fit together. It's a solid entry and I wonder what I missed by not making it very far down the road!