Hey, loving what you're doing with this and will definitely be following development. That said I have one major gripe with the current version.
You need some form of art direction! Realism can be good in a lot of cases, but it's extremely overdone in the world of first person survival games. I would love to see a style that is more carefully and delicately thought out to match the themes and . Think about the dull ambience of Inside, the vibrant hues of ABZÛ, maybe the gritty comic book style of the tell tale walking dead games, or even a pixel art style like diaries of a spaceport janitor. Whatever you do, come up with something that really pushes the atmosphere of the game to the next level and makes the game stand out from other survival games in the same way the unique gameplay does. You're obviously going to do well with this game but I don't want to see another interesting survival game with a boring art style. Give everyone a breath of fresh air and do something new and unique. Well that's all I have to say. Good luck with this.
Ps. Watch the movie 'the Life of Pi" and steal all the things from it ;P