It doesn't have to be positive, it just has to be constructive. Which he was. If you can't take constructive criticism, don't take any criticism. Would you rather hear that or "sounds cool!" Also, when you post in the WIP forums you are submitted directly to criticism.
Anyways, semantics aside, the song: I feel it kinda drones in the beginning, might want something softer compared to the syncopated guitar, like a pad synth earlier in the song.
The distortion you use makes the genre hard to define. I feel like it could be a jazzy version, but then it feels dirtier than that, so I think you wither want to work in a higher octave for the distortion in order to get a cleaner note with plenty of distortion, or include a cleaner countermelody, because the melody just feel out of the song.
I love 1:30 onward. Dat melody is niiiiiiice. I think that part is what makes the song for me. Build up to that. It's awesome it exists, but I need to feel it coming, and be glad it came.
All in all, a good concept and pretty good arrangement, I suggest working around with genre as this source is quite versatile, because I think with the synths you use it could be an awesome techno song, or with the guitar you use it could be some nice club jazz. Test the waters and see what you get (maybe even post it here for some compare/contrast? )