Thanks for playing! The sound was pretty horrendous after about wave 5 on the web build for me. I had tried the web version initially and everything worked, but I didn't have the massive waves at the time of testing. When I was balancing, I was playing locally a lot. The night I was posting the game I did all the web testing and found the issues. I think Godot has an option to optimize textures for web and I don't think I checked that box. And I wanted to add the settings for the volume bars, but ran out of time.