Best Frictional gameplay to date. I am very impressed with the open map that you can tackle objectives in different ways and nonscripted enemy encounters. I loved seeing players going in other orders from myself, having various meetings, and finding solutions to problems.
Only very minor issues (why doesn't fire burn wooden doors?) and bugs.
It definitely must play. It was one of the best horror games ever made and a delighted surprise after the disappointment Rebirth was.