Loved the effect
I really like this piece. You took a theme and you layered it with variations from that theme and when they all came together it really built some tension (greatly due to you use of what sounded like tremolo strings).
I really liked at 2:02 where that haunting melody comes in because it prepared the listener for the space that came after which the signaled the start of the B section. The B section then built back up in tension, the same way the A section did, and then ultimatly comes to the resolution of the song.
The resolution is great because while it concludes the song it does not resolve the built up tension of the piece which leaves the listener in the same state a few seconds after hearing the piece as they were a few seconds into the piece, tense and on edge, and since I feel this was the desired effect I say bravo.