How can one get the achievements listed in the Dota 2 section of the Library? If I click on "View all achievements" I just land on my profile page...
Any hint appreciated.
There is no way to unlock achievements in Dota 2 as of now.
What you see are just placeholders, they've been there for a long time but they don't really exist in-game.
Response from Valve employee on the question (29 May 2013 3:34am):
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site.
Would you like to answer one of these unanswered questions instead?