Sweet

I'd keep this as a template, but i'm taking the liberty of assuming you want to expand this into a full track and i could be wrong about that :3

If so i'd suggest breaking down to a melodic segment right at the 0:55 mark where you currently have a switch of riff. Not so much reintroducing the synth but a slower segment which you could use as a chorus part, then pick it back up.

You could use that a second or third time, depending on how long you'd like the latter part you currently have to be but perhaps twice with some kind of plateau prior to the end where you allow yourself room to add some ambient bells and whistles.

As is, i'd say it's a bit more proto Slayer then Megadeth but i mainly listened to youthanasia by them anyway so x3

Overall good stuff, keep it at it!