Hello! I absolutely LOVE your game! And I hope you release a full version. Now here is some of the stuff you might want to fix.
1. Lights (on the top floor): Instead of having a light button that turns on and one to turn off, I'd recommend using a Flip-Flop Node (I can give an example of a Blueprint).
2. Player Speed: It felt a tad bit too slow, but it created TONS of suspense for the chase.
3. UI (Main Menu): The main menu was lacking a bit; I'd recommend adding animations (I understand that this was only a demo).
4. Camera Speed/Sensitivity: I'd adjust some settings to keep the camera sensitivity a bit slower; I kept on doing 360s, lol.
5. Quests: I'd change the font for those, just to help emphasize the horror in the game. Maybe the "RUNRUNRUNRUN" could have a glitched font?
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Can't wait to see a full version!!! And if you'd like to update me more, my discord is @celestialstudio