Thanks for the feedback, it means a lot to us!
I will pass on the audio feedback to RyanAvx, he did all the audio.
Feel free to add me on Discord @Dreckly#3291 if you ever have any questions regarding those key features you pointed out, I can't promise to be able to always answer or answer fast but I'm always happy to help out, the leaderboards were a lot easier than anticipated to implement, however i had to make a $5 donation to get it to work in webGL.
Thanks again, glad you enjoyed it!