Question about Dark Souls

Yes

Yes.
You can get it through traders through other people..

You will be able to install it and play from your game library, but you wont be able to visit the page of the game, and If i'm not wrong the community hub too...

Both Dark Souls 1 / Bulletstorm are blocked in my country (Israel), and I was able to play them without a problem once they were in my game library.

This process won't be harder than the game is.

Yes, that is how i got it.

Buy on any site, maybe "Russian Version" and you will need vpn for download and play.

I think only JP version can't be activated abroad, but any other will do, including RU.