I’ve had terrible luck with spell casting classes. I’ve cleared it with Hunter and Warrior, both times just keeping my board full of big minions.
I had one good run with the Shaman with the Wax Golem and the artifact that makes death rattles trigger twice. I’ve get the golem down then in a few turns have a board full of immortal 5/1 minions. I lost that run to the Trapped Room when I couldn’t draw the wax Golem