I finally managed to release the linux build. It wasjust a minor issue but i didn't have time to dig into it before. If you are still interested it now works. Keep in mind that it is my first try at game dev so it is not very good.
No way yet, i'm sorry. I wanted to finish the game so badly so i didn't take time to polish and make menus etc. When i have time i'll look into it but that might be in some months. I hope it doesn't ruin the experience and you were able to enjoy it to some extent