Short, sweet, and to the point. How a proper slasher story should be. Keep it up, because with this being your first game, I think you knocked it out of the park first swing.
And that's not me blowing smoke, I was indeed impressed overall. The jump scares were minimal which made the ones you have more affective (sans the weird zombie janitor one that feels out of place), the setting and the premise are good. The boxes in the basement, though probably meant to cause claustrophobic feelings, honestly stood out overall as weird choice.
Keep it up, Rippers Lair!