Also no the quickest way to share PNATI is to log onto the pc of someone who owns it and has it already installed, log back out, have the owner log back in to allow sharing with your account, log out and back in as the person who wants the items, use steam achievement manager to unlock all achievements, then boot up both games to unlock the items.
People all over steam are offering to family share poker night 1 and 2 as a way to phish people's accounts.