Thank you for the feedbacks :)
Fortunately you just noticed a small fraction of the unpolish things and bugs in the game :p
Anyway I decided to upload the demo just to know feedbacks on some particular area like atmosphere and progression. With a prototype I am convinced that missing menus and props flying in the air are not ruining the general experience. Of course, can happen that some will not like that level of unpolishness, it is a risk that I am ready to choose :P IMHO better a missing menu than 2 minutes of gameplay removed.