The Curse of Naxxramus is a solo adventure that you can play in Hearthstone. At the time I am writing this blog, the Arachnid Quarter is available for players to open up. More new content will unlock in the weeks to come. First, you must defeat the 3 bosses in “Normal” difficulty. That is how you unlock the Class Challenges for this section of the Curse of Naxxramus content.
There are two Class Challenges: one for the Druid deck, and one for the Rogue deck. I decided to start with the Druid Class Challenge. It took two tries for me to get through it. The screenshots you see in this blog were taken on July 27, 2014.