Overall, I found this a great remix. I enjoyed the chiptune, it enhanced the "dark sounds" in the beginning of the song with the high contrast. Definately getting a spot on my frequent playlist.
But for my constructive criticism..
If there is one thing this song suffered from it was that it didn't seem coherent enough. Like reading a book with multiple authors, you can tell where the individual remixers chipped in their specific part. Like at 45 into the track and 1.36 the voices seem a little rushed. Then at 2.10 its a little overboard on the amount of instrumentation. At 3.10 the guitar doesn't seem loud enough too.
Overall I can see how that would happen with so many artists involved, but perhaps the song should have just been made longer?
In either case great job everyone, I still enjoy the song