Interesting...
It has a very malevolent feel to it, and I like that.
It needs some percussion of some sort obviously. Nifty beats and poundings would really help it out a lot. But I'm betting you have some ideas on that already, right? :-P
I will say I think that you will need to make it a bit more impressive structurally in the full song. Obviously with only 0:13 secs you can't really build anything grand.
Don't just stick with a melody and effects. Create a chord structure to follow of some sort. And use different instruments to create harmonies in those chords. So many of these electro songs end up just bad because it is just a melody and tons of effects. And that is so boring. Hopefully you don't get sidetracked with a thousand effects.
Also, you might think about adding guitars to it. Some dark and deep distorted guitars would sound really good with this. As well as some string backings. Even the crappy FL synth strings would sound decent with this type of song.
Hope this gave ya some ideas bud. :-)
3/5 and 5/10 overall, because I hate to pass true judgment on demos.
Good luck on this and your future projects.
-Gravey-