I liked the visuals, the music, and the glow being activated when players move looks very neat. The movement also feels very natural .
Now some points for improvement:
After you move right a little, enemies stop spawning turning it into a "go right simulator", in short the game has no challenge. When I just started playing I died a lot and it seemed very strange that you can't restart pressing "R" once you died. Also the game has many small bugs, e.g. the enemies can't really kill you :D
