Please help me with simple issue

[amnesiafan2]

Hello everyone,can you tell me where can i find or does it exist in game?
I mean https://www.youtube.com/watch?v=vxwAGB6Tos0
in the end there is a conversation between Professor and Mandus,are these lines exists in game and where can i find them?

[AlexCarlson]

I don't think those lines exists in the actual game.

[amnesiafan2]

Are u sure?

[FlawlessHappiness]

It's a teaser map, but there are places that looks like it like

Spoiler below!

Underneath the church, with all the cages.