There are a lot of cards to unlock in Hearthstone: Heroes of Warcraft, and it’s going to take you a long while to unlock all of them normal way.
I have this list broken down into specific cards, groups of cards (class specific, neutral, etc), expansion groups, and card packs.
Please leave comments below if you have found more unlockable cards that need to be added to this list.
Specific Unlockable Cards
Captain’s Parrot – Obtain all Pirate cards in the Expert Set (you receive two copies)
Captain’s Parrot (Golden) – Obtain a Golden version of all Pirate cards in the Expert Set (you receive two copies)
Gelbin Mekkatorque (Golden) – Purchase a pack or arena entry during the Beta period with money
Old Murk-Eye – Obtain all Murloc cards in the Expert Set.
Old Murk-Eye (Golden) – Obtain a Golden version of all Murloc crds in the Basic and Expert Sets (will require a level 51 Priest, level 53 Paladin, level 53 Warlock, and level 53 Rogue)
Unlockable Card Groups
Class-Specific Basic Cards – Level the corresponding class you want to unlock cards for (cards are unlocked at Levels 2, 4, 6, 8, and 10 for each class)
Golden Class-Specific Basic Cards – Level the corresponding class you want to unlock cards for (all are unlocked at Level 52 for the Mage and Warrior, and Level 50 for the other classes)
Golden Class-Neutral Basic Cards – Level every class to Level 60 (cards are unlocked at levels 53-60 for the Mage and Warrior classes, and 51-60 for the other classes)
Unlockable Expansion Card Groups
Naxxramas: Class-Neutral Common, Rare, and Epic Cards – Defeat all 15 Naxxramas bosses, one card is earned per boss
Naxxramas: Class-Neutral Legendary Cards – Clear all 5 Naxxramas wings, each wing provides cards
Naxxramas: Class-Specific Cards – Clear each Naxxramas Class Challenge with the corresponding class, a card is earned for each class
Naxxramas: Golden Card Crafting – Obtain a normal version of any Naxxramas card to unlock the ability to craft a Golden version of that card from Dust
Unlockable Card Packs
Reaper of Packs – Purchase Diablo 3: Reaper Of Souls, and redeem the code provided with the game (provides one card pack)
Greater Reaper of Packs – Purchase Diablo 3: Reaper Of Souls – Collector’s Edition, and redeem the code provided with the game (provides three card packs)