What's this, another desperate attempt to revive the Hearthstone subforum?
The introduction of achievements (which was long overdue, according to some) has brought a new dimension to the game. Most achievements give you nothing more than points and a nice, green check mark in the relevant section. But for the newest set it's different. Clearing these achievements will earn you XP - which means you advance more quickly on the rewards track.
So, anyone around here who's been grinding achievements?
I finally cleared this one a moment ago. It took me way too much time.
I built a deck without spells and with Mankrik, Augmented Elekk, Brann Bronzebeard and Malygos the Spellweaver. Having Emperor Thaurissan and of course a decent amount of (targeted) draw also helps. And sometimes you have to go easy on your opponent, or you'll win before you can summon Mankrik, CbH. It's a terrible deck but I played purely for the achievement.
Here's another one, but from 'Gameplay - Core' (so no XP).