I think something broke when I tried to play? Since I see there's an audio credit but I couldn't hear anything (even as presumably enemies zoomed past me at 1000mph)
Sound and music assets were made, but it isn't in the game at the moment. It's a work in progress, I added a list to my description now to note what's being worked on. Thanks for letting me know about the enemies, that should be fixed in this new update.