Hey, this is a pretty nice chiptune, spyderbrd! I'd say that, overall, you still have more work to do to create a smooth mix; but the only way to get better is to make tracks, so you're on the right track.
It only seems moderately Halloween-y to me much of the time, but some of your instrument choices really fit the vibe, like the lead that comes in at 3:05. Those are some of the most creepily appropriate progressions in the entire piece as far as I'm concerned, so well done!
One other thing of note is the ending, which has an increasing amount of hiss for some reason. I don't know if that was intended or merely an anomaly, but it just doesn't sound good. The ending is also rather sudden, not to mention incredibly simplistic, but hey--endings are hard.
spyderbrd 
