Thanks for playing all the way there! The volume button showing up was a bug (it’s hidden now). There’s intentionally nothing hidden beneath the black screen.
hello i want to know, what do you need to do when you get to the Second Stage, is there anything else you can do
The game doesn't require you to do anything, but you are free to do whatever you want.
Bad design? Are you saying the game is over? If so, it needs to tell you that.