Well, I don't usually review rock stuff, but hey first for everything, right!?
Anyways, I like the chords you're using in the beggining. And even though you're using slayer, which usually doesn't sound all that good, I think this sounds really sweet. The bells you add in, sound really good. I like how this takes a few different directions. Very creative, if I do say so myself. If this is something you would call a low effort piece, I'd really like to see something that you put all your effort into.
If there was something that I could suggest, would maybe be something like a solo or something. Just to spice it up a bit. I don't know... Even without it, it's fuckin' dope!
Drop me a review if you find the time, please!