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I couldn't find the lightswitch. I spent ten minutes clicking like crazy and nothing. I saw nothing but two white lines every once in a while. Aside from that, you have something misspelled in the beginning when the game is loadning. Are you aiming for deaceased or diseased? You spelled it deseased, almost like a combination.
I'd somehow give a clue whenever the person is close to finding the switch like the character thinking or some text showing up "I think I found something" so they know where to click.