First topic message reminder :
Here you can claim all Duel Achievements
(which can be found here http://www.worldduelingacademy.com/t3194-duel-achievements)
All Duel Achievements can only be accomplished in an Official Duel. You can post a Single Duel in the Duel Arena for that reason, but be reminded that only Official Matches are awarded with Rank Points.
In your Duel Arena topic you must mention accomplishing the achievement and the opponent must confirm. In this topic post proof in the form of a screenshot. If you can't take a screenshot you can download this program http://www.picpick.org/download or find a tutorial on taking screenshots on your pc.
If the achievement is complicated you or your opponent may be asked questions of how the play happened. Remember that no achievement is valid if any illegal play was made in it. Also remember that for a Duel Achievement to count Watchers on DN must be allowed and there must be no Watching password.