Hello there all you owners!
I just found out a much easier way to do the achievement:
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Usually, like most of us know, it is done by getting the stun dispelled with ex. Cleanse, or using a PvP trinket.
However, there is something much easier. When/If you get stunned, you just hover your mouse in front of your character
and spam the right mousebutton as he throws his hammer at you. You will then catch the hammer and be able to throw
it just like if you were cleansed.
This tactic is alot fun too, and I do really believe that it was this way Blizzard really wanted us to do this achievement
Enjoy!