Some songs seem to be a mix of death and black metal, while others are kinda balad-heavy metal. And there's some non-metal stuff in there.
As a musician (metal amongst other genres), I have to add, the songs are recorded poorly. If they're gonna record a demo, it's a good idea to invest some money into an adequate studio (I'm counting $250-$350 a 12-h-day).

And while I'm at it, the lyrics really need some work as well XP

They have a top 10 demos there so you can at least compare and see what's what.

BTW Demos don't have to be expensive but they do have to be listenable - no hiss or obvious FU's