Gameplay was good but there could be hiding mechanics like in Outlast. There wasn't a story, I was actually curious about some parts but couldn't find a clue. Hints were clear and enough. I liked the objectives you have to do to escape, they are well-considered. The environment could be improved to make it look more like a pyramid in Egypt but other than that, it was elegant and mind confusing (which is good). As for the horror part- I had to take off my headset and ALT+F4 immediately because the alien scared the hell out of me, and continued to do so throughout the gameplay.
Well done!