Thanks for the extra feedback!
Im curious as to how the game restarted for you, did you go into the Main Menu and press Start instead of Continue?
yeah, I was deep into the menus twiddling with settings and kept hitting "back" but accidentally took me all the way back to the main menu (well, first it asked me for language and darkness settings, which it probably shouldn't do again since I already did that), and then I hit "start" since I wanted to restart the level. I guess I should have hit "chapter select". But there should be a "are you sure? this will delete all your progress" notification, or simply just go to chapter 1 and don't delete the progress, so that people can play again without losing all their progress.