Blizzard has revealed a few more crucial details on Hearthstone: Heroes of Warcraft's first expansion, Curse of Naxxramas. They outlined the prices for each part of the expansion and also explained how Heroic Mode will work.
As previously announced, Curse of Naxxramas is a single-player adventure split across five wings. These wings will be released one at a time over five weeks. The first, the Arachnid Quarter, will be free to download.
However, Blizzard said today that the Arachnid Quarter will only be free during Curse of Naxxramas's "launch event."
"The launch event will last roughly a month or so, meaning you’ll have plenty of time to get your foot in the door—we’ll have more details to share about that later on," Blizzard said on Hearthstone's website. "The web-choked corridors of the Arachnid Quarter are home to the bosses Anub’Rekhan, Grand Widow Faerlina, and Maexxna. Defeating these bosses will add new cards to your collection and give you a taste of the dangers that await you deeper inside Naxxramas."
The other wings will be released in the following order: Plague Quarter, Military Quarter, Construct Quarter, and Frostwyrm Lair. You can buy wings individually or purchase them in bulk for a discount. Here's the full list of prices:
In Curse of Naxxramas, players face 15 A.I. bossesfor the opportunity to earn new cards. Completing Naxxramas on Normal gives you access to Class Challenges, objectives that need to be completed by specific classes. Completing a challenge unlocks a new card for that class.
Finishing a wing of Curse of Naxxramas on Normal allows you to try Heroic mode. Heroic mode bosses are "significantly more difficult" than usual. If you manage to best all the Heroic bosses in Naxxramas, you'll unlock a new card back for your collection. Blizzard hasn't revealed what this card back will look like yet but I'm sure that information's coming soon.
The other missing piece of information about Curse of Naxxramas is the release date. Blizzard has said that the expansion will launch sometime in July, though, so expect a specific date in the near future.