You have some neat ideas, but execution could use some work - which is to be expected from a first track.
Your instruments all sound very similar, and they're mostly at similar volumes, which can create some uncomfortable dissonance even with chords that should sound normal. I don't know if you were trying for a more 8-bit sound, but I think it could still benefit you to find some different samples to work with. If you don't have many sounds, anyone here could link you to good resources if you're interested.
Other than that, the composition and use of effects was good. Drums were a little uninteresting, but they served their purpose.
Do post more of your work once it's finished! This thread could use a boost in activity. I'd love to see your .ptcops as well, which can be attached to posts as files. It would help people give more specfic advice, and can be downloaded and edited to demonstrate something.
By the way, the page you link is
https://soundcloud.com/jeremy-er-1/darkcity but the file is actually at
https://soundcloud.com/axolotlet/darkcity now. If you could fix that it would be easier for other people to find.