So it's clear from the get go that this game is heavily inspired by games like FNAF and Observation Duty. Taking the camera and reporting system from one, and needing to guard and light several directions at once to keep an entity at bay from another. In general it's incorporated well and balancing the monitoring/reporting with checking your surroundings makes for dynamic gameplay.
The menu is a bit bugged though. Firstly there's some Z fighting on the monitor. Also when looking left to check volume it's impossible to change is as holding A to look that way also changes the volume. May be worth making the volume slider unaffected by the key presses so you can change with the mouse without intrusion?
(SPOILERS IN THIS PARAGRAPH)
I'm unsure if it was a bug or not, but when i reached 7am, the screen went off and nothing happened for a good while. I eventually got jump scared after a whole 2 minutes and 50 seconds. I get it's a "there's no escape really" scenario but almost 3 minutes is excessive. My guess is this is simply a bug and given this is a demo I'll reserve judgement on this part but thought I'd mention it here. I think what may help make the ending/wait for the end better is a radio message from a team coming to get you, sort of a fake out where the entity kills you just when you think you're safe?
Overall though it's fun and kept me tense, especially in the 2nd half when it all got a bit hectic. Fix those minor things I mentioned and it'll be pretty solid!