How to get the harbor key ?

[Killer red]

How to get the harbor key ?? please because i just spoke with amaria, at the blue police building, after cain entered it. Amaria give me nothing Help please

[Mei-o_Scarlett]

youre suppose to defeat the pulse in the building then she'll give it to u in the building

[Sheep]

Go to the North Obsidia Ward, just below the police station. You need to head to the factory that you first met Fern outside of, in the bottom left of the North Obsidia Ward.

[Killer red]

Ok thank you