A well polished slasher flick with a potential to become series - excellent work!
I'm a huge fan of "Halloween" type slashers and intimidating killers. I've to say you nailed the atmosphere, sound design and characters. For some reason, the main character Mia felt 3 dimensional, given just 1 simple scene. As far as the beginning of the game - classic horror approach. Overall - highly recommend this!
Best of luck with the future games!