Update: yeah the darkness problem was on me. I changed the brightness, closed the window in my room and was finally able to see the game properly.
Second update: figured I can edit comments. Also, is being "eaten by the entity" a valid ending? Because I honestly have no idea what happened there and I don't think I could do anything. This game makes me feel really stupid
Final update: Okay, | finally finished the game, properly this time. It was pretty confusing at first, then annoying, but in the end I'd say that it's a solid 7/10 for a small browser game. The gameplay loop is simple but entertaining, at least once you get the hang of it. My only suggestions are 1)include that wall of text explaining how to play into the game, 2)add lights in the beginning, 3)either make the visibility sliiightly higher or the switches sliiightly more noticeable. Just a little bit.
A note in conclusion: I apologise profusely for my utmost terrible manipulation of the English vernacular.