Easy to get many secret achievments on Heartpwn.
To get this achievments you need to create copy of this deck in Hearthpwn deck builder.
Press "Copy Deck For Hearthstone" button:
Then "DECKS" on top panel:
"Build a Deck". Paste code under the "choose your class" panel. Press "Or import from Hearthstone" button:
"Save deck" and then "Save" again on bottom of window.