Nice little game you've got there. The art, music and sound are great; I particularly like the look of the witch from the training. The whole game has a really nice atmosphere.
However, I found the gameplay itself pretty frustrating. There isn't any cue, visual or audio, about when to swing your staff for the invisible ghosts. I just have to kind of guess when the ghost is coming, and that's not fun. I continually died because of the guessing, even though I had remembered where the ghosts were coming from.