Thank! While I'm not planning on working more on this game, I do want to make another singleplayer fps in the future (not sure if it will be an extraction fps, something with a story, or a roguelike). I have 2 different practice projects I want to make before this, but this game seemed like a good learning experience for my future fps game.
Maybe I'll try and fix some of the bugs in this game if I have time, because there are a few.
As for the bugs you mentioned, I know about the audio bug, but I didn't have time to fix it sadly. You lose when time ends or you have no bullets left, so if it ended with time and bullets left, that's a bug for sure.