Won't play a game where some achievements are only available to the "little circle of buddies", this stinks. I don't mind about ingame bonuses, but achievements should potentially be fullfilable by everyone.
I never heard about this game before it's release, and now I regret I lost time purchasing/installing it. The feeling of segregation just makes it unpleasant.
You guys can pat yourself on the shoulder with your unique achievement, I'm sure I won't be the only customer turning his back on Obsidian games from now on.