Love the voice acting. My biggest gripe is that the enemies don't follow the same rules I have to. They can move and shoot through obstacles, but at least it's not too hard to lose their agro, especially once you have some speed upgrades. I also found it jarring that I couldn't fly over the road 'bridges'.
Other than that, fun! Flying around at max speed feels great, and it doesn't feel too punishing when you crash into something.
Oh yeah, I also found myself purposefully bouncing off the walls because I wanted to go back and spend my scrap, so I wish there was a way to return to base of my on volition.
Nicely done!