What is this in 6/8 time? Lol.
Anyway, the intro is very nice. The drums are awesome. They give the "dark monster coming to get you" vibe. When they kick in really hard at 0:41 with the guitar I started to really rock out to the song. But right as it starts to feel a little too repetitive, it switches up nicely.
The drums do their thing, with the piano continuing the main riff. I really enjoy the synths that fade in from the dark and arise into the front. Brilliant. I'm not quite sure I like the sudden change at 1:42 though. It just feels a little too choppy. I do like the drums going back to the dark side though.
I'm feeling the chord progression, and it starts to get old being played over and over. Maybe try varying it up a little. Now at 2:03, I really like the drums kicking in again and taking over with the hats and cymbals. It sounds like you just started having fun with the synths and letting them take control for a minute. This is something I would have liked to hear a little earlier in the track.
The outro flows rater nicely and fits with the song, unlike a lot I've hear that just stop suddenly. You also have a nice little piano hit at the very end to tease the listener a little. I like that a lot.
Great track! You get my download.