Even as we developed the game, we were so scared ourselves. Stuff goes crazy when coding and the most unexpected things happen at random times :P We really appreciate you trying though and wanting to know the end!
Regarding the brightness setting, we thought about it over and over again of whether we want to remove the very aspect that makes the game terrifying. We do understand that being blind doesn't always mean it'll scare our audiences but since this particular theme was about lights going off, we couldn't resist. Also on this note, the darkness truly applies during the "peaceful" tutorial phase. After that, you do have a flashlight in handy that does light up your path a bit. In the future, we do plan on incorporating changeable settings like brightness so thank you for the feedback!