This is really good! I loved the atmosphere created by this. The overarching strings (at least I think those are strings) in the first part I think really helped a lot with that. Definitely fits the genre you were going for! The marimba was also such a nice instrument to add to this, and the thought provoking synths are so pretty, especially with the tonal shift in the middle. Very well done!!
P.S. This sounds amazing for something done in only a few hours!!