I really like the way this looks. The environments are haunting and spooky, and the sprites are intriguing. The music is also very fitting. The theme is well-implemented.
Sadly, I had very serious issues with the controls. The Dash command would only work a fraction of the time, and I have no idea why.
Note that the sound effect that plays while the ghost is out of the shadows is quite irritating--I found myself turning the sound off even though I liked the music.