It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

Where is it ?
I noticed in a walkthrough of the demo, that there is a whole scene, which was not in the demo, I played several
months ago.

When I started the full game, there was no "new game" at the menu screen, but only "continued". And then the
game started at the long wall, where you have to avoid guards and the bad guy in the tower.

What is going on here ? Later in the game I need a spiders web for the guard at the toilet, so how do I get it ?

I would be grateful for any help here.