This isn't the beginning of the game. We saw the opening at E3, and this isn't it.
It crashed on me when I tried to get back on the ferry to leave.
Also there was something weird going on with the voices. Sometimes they were clipped and there was no voice at all underwater (was it supposed to be that way?)
Can't really blame them, since it's not an official English demo, but I hope it's not an indication of how well (or not) the game will work on my computer.