The melodies and progressions in this are very good, suits the spooky/halloween vibe. Instrument choice is nice, the main problem being the mixing.
Feels like too much reverb on drums, and seems like there is some reverb on low end, causing it to feel distant and not hit as hard (and hard-hitting drums would fit the mood its in.)
Reverb works well for making things distant and filling space. However you don't want your whole track to feel distant (unless your going for an atmospheric track). You also don't want Reverb on the low-end, because it only requires one bass to fill up that frequency range, and adding reverb to it causes it to be muddy. For reverb on other instruments, it should be dealt with lightly and shouldn't be put on everything. (the chiptune drums and such for example, don't work that well with reverb)
I believe the reverb mixing is the main problem in the track, since the melodies, progressions, instrument/sound design is done very well compared to the mixing here. Overall a good track that would be made even better if that was improved upon, still good work!