The controls feel a bit uncomfortable.
I kept opening the map constantly because I got lost almost from corner to corner. However, the "M" key is quite far from the rest of the controls, especially when using a mouse at the same time. I think it could stay accessible at all times in the top-right corner. There’s enough space there, and I use it quite frequently anyway. Alternatively, if you don't like that idea, it could be mapped to something faster, like Tab or a mouse click.
The hunter sometimes caught me without me even realizing I had run into it. It would be helpful if it made a sound either generally or specifically when it detects the player. At one point, I didn’t even know it was still following me, so I stopped to avoid making noise, only to realize it had been right behind me the whole time on level 3.
The wall textures are very uniform, and sometimes when walking through corridors it felt like I wasn’t actually moving. Because of that, I thought the game had bugged out and I wasn’t progressing at all. The exit wasn’t very clear either, at some point I was just swallowed by the darkness and then realized I had completed the level.
With some polishing it could be really good, but right now it feels more like a 3d pac-man experience than a horror escape game.
I’ve made a similar game myself, and I think I may have fallen into the same trap.
One more thing: English should probably be the default language, since most players would understand it. Also, when you die, there’s no restart option, you always have to reload the game and switch the language back to English.