I enjoyed this game, but there were two major flaws I noticed:
First off, why X to airboost? That feels kinda awkward and out of place. I would suggest E, because most peoples fingers are naturally closer to that key while moving.
Also, the Low Res aesthetic felt more like a hindrance then a style, it made going through some areas a major headache. The game managed to have surprisingly good graphics for the aesthetic though, with each weapon having its own subtle lighting to it, and other nice touches.