I got 72 but I am confused. I couldn't figure out if the player is meant to move or be static in the middle. I tried wasd and the arrow keys on my keyboard. The instructions didn't mention movement but it looks like in the screenshots you could move since the player is off center.
The black bullets have a nice bass sound. Interesting enemies with the patterns that are put in. I don't think you want the itch page background color to be the exact same as the Unity window because sometimes I was clicking onto the webpage instead. Which is a pain with right click.