Help with Anticitzen one...

[npstaind]

Im stuck, Im with alyx and three others in this building, she says we need to go to the square, and i cant find a way out. where do i go?

[Zeus]

Hmm I think I know where you are, just keep going down the hallways, you will find a way out.

[CREMATOR666]

It's a door with a shade very similiar to the wall, look for it.

[Blakeb155]

As far as I remember it pretty straight forward from there. Just follow the path.