See title. I experienced this. A thread on the Steam forums was posted by someone else, and I reproduced the bug, annoyingly.

http://steamcommunity.com/app/222640/discussions/0/810938810898257346/

Hi!

I'm working at Cyanide. It seems that we have a problem with our Demo version on Steam. The people who buy the game after playing the demo are stucked in map 02.

We are working on it and it will be fixed very quick for the future buyers. If you already have that problem you can create a ticket on our support (https://support.cyanide-studio.com/) with your last save attached. We will fix your save so you can play the rest of the game.

If you restart the game at the begining after playing the demo, it should be OK.

We're very sorry for the inconvenience.