Well done.

I will not critique this is as a song, but as a preview.

Build is exciting, and reminds me much of teh Popular game DooM. At 42 seconds in I hear this slight drumbeat, and its nice, just doesn't seem to fit the rest of the song. Add a little deeper bassline, maybe even some kind of epic electric beat, it just is missing the fundamental bass, which make this song hollow. I see you tried at 25seconds, but make it a bit Harder.

-Scorn

Reviewing+Stalking

Very good intro section, but right at :32 I would suggest started up a louder bass in the background. Personally, deeper/louder bass is better for me, but thats just my personal opinion.

:52 also needs something new to be added in.
It would fit the pattern in my head :3

Good Start and Buildup

If and only if the ending is as good as this buildup i will give it a 10.