I made it up to 17km, then suddenly out of bullets and no chance of surviving :D
Nice work with the modelling and game loop! Would have loved to see some more variation. 20km of the same (maybe other things happened after a while?) would not have been fun, that felt way too long.
Sadly the music was gone after restarting once after I died. It was nice! I liked the audio and visuals, nice low poly style and an effective UI. Cool stuff!
Nice entry, well done! Fun to see another track bound game :D