How to get to the shadowed area in docks? I assume that it's HK factory but couldn't find any ways to get in.

You can't get there. And it's not the HK factory. It's just a random area, one of the many unfinished areas of the game.

 

Don't read below if you don't want to have stuff spoiled. Unless you've already played through the game.

 

 

The HK factory was supposed to be on Telos (that transition door you couldn't open in the restoration zone bunker), but it got cut from the game due to lack of time. Don't bother looking for it.

 

Pity. I figured as much. It looks like fuel quest where the only 'alternative' is to deal with the Hutts. Why would anyone want to rush a product so much if they care about company's reputation? Just rethoric question, yep.