Its a really good game, I love the idea although it really stretches the idea of the theme, in my opinion I don't think its fits it that well. The music is really good tho and the movement feels great.
I agree, at the start the idea was that you are intengible while not real and couldnt get hit, but it was kinda boring so I made it so you could kill while unreal, ya, the theme kinda got lost in the process.