Nice work there!
I like how the bass rythm goes with everything you put with it, that and how you make it seem like a figure so sneaky and vile is creeping up on someone and the 'running away' or 'chase' effect. Very nice track. I'd advise not using very high pitches in short sequences ( like having a sequence of high notes playing and then quitting without an almost immedate lower sequence playing afterward )... 4/5