But how can you be sure that the achievements will cover everything important? The answer is that you can’t be sure, but you can take part in the new contest to come up with achievements and send them in. Winners get Argents, special headpieces, and the respect of their peers… by having the achievements added into the game when the system goes live. Although we suspect “win the contest to have an achievement added to the game” is not going to win or be added.
Source: Official Site