Hey, cool entry! I think I'm not the right audience since I don't like scary games a lot, but I gave it a shot anyway. A webGL build might be better for accessibility, is that something you can do with Unreal?
Gameplay wise, I think I was a bit confused at first. I think it'd be helpful to add some more visual feedback to stuff (for example, it took me a while to get that the valve is a toggle. I spent a lot of time holding E near it). Same with the red button in the room you spawn in. I think there's a solid idea here, a short scary game where you have to manage your resources to survive (ala FNAF). Maybe you could also reconsider making it a "see how long you can last" game, given how the player will quickly get used to the mechanics and start to survive more easily, so the format might be better for a level based game, or maybe one of those escape room games where you have to keep an eye on your heat and the monster while you do a puzzle to get out of the room. Just some thoughts!
I think the theme fits well enough, and the heat is a core part of both the gameplay and the aesthetics. Well done!
In terms of aesthetics, I think your game looks great. The lightning works wonder and the atmosphere is very broody and scary. The monster model is very cool, and appropriately creepy. My only suggestion would be to not show it off as much. Since you see the monster in the opening screen of the game, it's immediately creepy, but the more you look at it, the more you get used to it, so by the time you start playing you might have already stopped being scared by it.
In terms of sound, I gotta be honest, I played with the volume way down, so I can't really give you much feedback on this front. I'm kind of scared of indie games since people tend to leave their jumpscares way too loud to the point that they're more infuriating than scary. I don't know if you did that, but it's something to watch out for!
Very cool entry, keep up the good work!