There's a lot of panning issues in the melody, and the kick sounds really squishy. The 808 sounds to be overlapping itself. The space melody has too much 200Hz - 600Hz, and is also 10 DB too loud. The beat gets really repetitive - I know that's the style, but you can always do something to catch the listener's ear. I'd change up the drum pattern every 8 or 16 measures or so. The high hats are a tad too loud, turn them down by 4-7 DB. The space melody also sounds slightly off key