Arena mode...
	Better daily quests...
	Card Backs...
	Craft Expert Cards...
	Early Gold Investment Advice...
	Extra classes...
	Golden hero frames...
	Jaina Proudmoore hero...
	Mage class...
	Naxxramas unlockables...
	Proceed to the Arena with Caut...
	Quests Offer Great Rewards...
	Rewards...
	Solo Adventures mode...
	Tavern Brawl mode...
	Unlock Cards by Leveling...
	Word Of Warcarft Hearthsteed E...

Unlock all heroes.

Win fifty games against human players in Play mode. You now can start daily quests with larger gold rewards.

Meet the following conditions to unlock the following card backs.

Card Back	How to unlock
Blizzard 2014	Promotional reward for attending or for purchasing a Virtual Ticket to BlizzCon 2014.
Blizzard 2015	Promotional reward for attending or for purchasing a Virtual Ticket to BlizzCon 2015.
Dalaran Flame	Promotional reward for active TeSPA (The eSports Assosciation) members belonging to a local chapter with at least 25 members.
Fireside	Play 3 matches against other players on the same subnet (local network), while at least 3 players are signed in on that subnet.
Galaxy Gifts	Unlock the "Galaxy Gifts" achievement. (See the "Unlockables" section for more details.)
Golden Celebration	Promotional reward for placing in the top 128 of certain tournaments.
H01: Alleria	Purchase the "Alleria Windrunner" Hero.
H02: Magni	Purchase the "Magni Bronzebeard" Hero.
H03: Medivh	Purchase the "Medivh" Hero.
Heroes of the Storm	On the same Battle.Net account, reach Player Level 12 in the game "Heroes of the Storm".
Heroic Naxxramas	Defeat all 15 Curse of Naxxramas bosses in Heroic Mode.
Legacy of the Void	Promotional reward for pre-purchasing "Starcraft II: Legacy of the Void" Digital Deluxe Edition or Collector's Edition on the same Battle.Net account.
Legends	Reach Legend rank in Ranked Play mode in any season.
Molten Core	Pre-purchased the Blackrock Mountain adventure using real money before its release.
Nefarian	Defeat all 17 Blackrock Mountain bosses in Heroic Mode.
Power Core	Promotional reward for attending the "2015 EUROPEAN ROAD TO BLIZZCON" event in person.
S01: Pandaria	Reach Rank 20 in Ranked Play mode in April 2014.
S02: Black Temple	Reach Rank 20 in Ranked Play mode in May 2014.
S03: Rainbow!	Reach Rank 20 in Ranked Play mode in June 2014.
S04: Naxxramas	Reach Rank 20 in Ranked Play mode in July 2014.
S05: Icecrown	Reach Rank 20 in Ranked Play mode in August 2014.
S06: Pirates!	Reach Rank 20 in Ranked Play mode in September 2014.
S07: Hallow's End	Reach Rank 20 in Ranked Play mode in October 2014.
S08: Goblins	Reach Rank 20 in Ranked Play mode in November 2014.
S09: Gnomes	Reach Rank 20 in Ranked Play mode in December 2014.
S10: Maraad	Reach Rank 20 in Ranked Play mode in January 2015.
S11: Lunar New Year	Reach Rank 20 in Ranked Play mode in February 2015.
S12: Ragnaros	Reach Rank 20 in Ranked Play mode in March 2015.
S13: Cupcake	Reach Rank 20 in Ranked Play mode in April 2015.
S14: Ninja	Reach Rank 20 in Ranked Play mode in May 2015.
S15: Darnassus	Reach Rank 20 in Ranked Play mode in June 2015.
S16: Darkspear	Reach Rank 20 in Ranked Play mode in July 2015.
S17: Tournament Grounds	Reach Rank 20 in Ranked Play mode in August 2015.
S18: Exodar	Reach Rank 20 in Ranked Play mode in September 2015.
S19: Highmaul	Reach Rank 20 in Ranked Play mode in October 2015.
S20: Explorer's Map	Reach Rank 20 in Ranked Play mode in November 2015.
S21: Shaman Thrall	Reach Rank 20 in Ranked Play mode in December 2015.
S22: Love is in the Air	Reach Rank 20 in Ranked Play mode in January 2016.
S23: Tauren Thunderbluff	Reach Rank 20 in Ranked Play mode in February 2016.
Staff of Origination	Clear all 13 The League of Explorers encounters in Heroic Mode.
The Grand Tournament	Pre-purchased a 50-pack bundle of The Grand Tournament set using real money before its release.
Warlords	Promotional reward for purchasing World of Warcraft: Warlords of Draenor Collector's Edition or Digital Deluxe Edition.
Winter Veil Wreath	Win a game in the "Gift Exchange" Tavern Brawl in December 2015.

As you earn new Expert cards, you'll start to have a smattering of Expert cards across all the different classes of Heroes. A good way to make the most out of playing for free is to pick one or two classes to focus on, then craft some new cards for those classes. Do this by "disenchanting" the Expert cards from other classes, then using the Arcane Dust to craft new cards for the classes you want to focus on. It will take disenchanting higher level cards, or a lot of Common cards to make even one new Common card, but the advantage is you'll be able to choose exactly which cards you want to create.

Don't be tempted to spend the first 100 gold you receive on Expert Card Packs. Save it instead to go toward entrances to The Arena. Even if you lose, you'll still walk out with a new card pack and some Arcane Dust. Win a few matches and your investment will prove even more rewarding.

Defeat a class in Practice mode or Play mode to unlock it.

Win five hundred games in Ranked Play mode with the corresponding hero to unlock golden hero frames.

Successfully complete the tutorial to unlock the Jaina Proudmoore hero.

Successfully complete the tutorial to unlock the Mage class.

Successfully complete the indicated task to unlock the corresponding bonus.

Class Challenges
Successfully complete a Naxxramas wing to unlock the Class Challenges for that wing.

Class-Neutral Common, Rare, and Epic Cards
Defeat all fifteen Naxxramas Bosses. One card is earned per defeated Boss.

Class-Neutral Legendary Cards
Successfully complete all five Naxxramas wings. One card is earned upon the completion of each wing.

Class-Specific Cards
Successfully complete each Naxxramas Class Challenge with the corresponding class. One card is earned for each class.

Golden Card Crafting
Acquire a normal version of any Naxxramas card to be able to craft a Golden version of that card from Dust.

Heroic Mode Wings
Successfully complete a Naxxramas wing to unlock a more challenging Heroic mode version of that wing.

In the Arena, your opponents are human and your rewards can be significant. When you enter the Arena, after paying the 150G entry fee, you get to keep battling until you secure nine wins or three losses, whichever comes first. If you lose three times in a row on your first attempt, you'll leave with an Expert Card Pack and 40 Arcane Dust. If you win some rounds, your prize will be even better. For that reason, it's a good idea to get some practice before you enter the Arena, so that you can have a better time battling once you do enter and hopefully come away with better loot.

While card packs and entrances to The Arena can be purchased with real money, they can also be purchased with the in-game currency - gold. Gold is earned by completing quests, and a few of the early quests will also earn a free Expert Card Pack.

After playing one match in Practice mode, the first quest should pop up, and it's a good one - play one match in Play mode (a casual or ranked match against a real player), and earn a free pack of cards. It's not necessary to win, just play.

From there, the next 2 quests are also relatively easy and rewarding - Play 3 games in Play mode to earn 100 gold (which is enough to buy another pack), and level any character up to 10, to earn a free pack. Once again, it doesn't matter if the games in Play mode are won or lost.

From there the quests get a little tougher and less rewarding, and they must be played in Play mode or The Arena, but they're still the key to earning gold. Most will have to do with winning games as a specific class of Hero, or defeating a certain number of minions, or dealing a certain amount of damage to heroes.

Meet the following conditions to unlock the following rewards.

Reward	How to unlock
Arena Mode	Unlock every Hero.
Better Daily Quests	Win 50 games against human players in Play Mode. This unlocks the ability to get daily quests with larger gold rewards
Big Winner Achievement / 300 Gold	Win 1000 games in any mode.
Captain's Parrot card (2x Golden)	Acquire a Golden version of every Pirate card in the Expert Set.
Captain's Parrot card (2x)	Acquire every Pirate card in the Expert Set.
Chicken Dinner Achievement / 300 Gold	Win 100 games in any mode.
Class-Specific Basic Cards	Level the corresponding class. Cards are unlocked at levels 2, 4, 6, 8, and 10.
Crafting Time Achievement / 95 Dust	Disenchant a card.
Crushed Them All! Achievement / 100 Gold	Defeat every AI Hero on Expert difficulty in Practice Mode.
First Blood Achievement / 1 Card Pack	Complete a game in Play mode.
Gelbin Mekkatorque card (Golden)	Purchase a pack or arena entry during the Beta perioid with money.
Golden Class-Neutral Basic Cards	Level every class to Level 60. Cards are unlocked at levels 53-60 for Mage and Warrior, and 51-60 for other classes.
Golden Class-Specific Basic Cards	Level the corresponding class. A complete set can be obtained at Level 52 for Mage and Warrior, and Level 50 for other classes.
Got the Basics! Achievement / 100 Gold	Collect every card in the Basic Set. This can be accomplished by leveling every class to level 10.
Level Up Achievement / 100 Gold	Get any class to level 10.
Mage Class	Complete the tutorial.
Old Murk-Eye card	Acquire every Murloc card in the Expert Set.
Old Murk-Eye card (Golden)	Acquire a Golden version of every Murloc card in the Basic and Expert Sets. (This requires a LV53 Warlock, LV51 Priest, LV53 Paladin, and LV53 Rogue).
One of Everything! Achievement / 100 Gold	Collect every card in the Expert Set.
Ready to Go! Achievement / 100 Gold	Unlock every Hero.
The Duelist Achievement / 100 Gold	Play 3 games in Play mode.
Unlock Additional Classes	Defeat the desired class in Practice Mode or Play Mode.

Unlock every Hero. Adventures can then be purchased using gold or with actual currency.

Have any class reach Level 20.

You don't have to pay to gain access to additional cards. Each of the heroes has his or her own set of 20 basic cards (these are really only 2 sets of the same 10 cards). Defeating a hero in Practice Mode will unlock a few of the basic cards, and then the rest can be unlocked by leveling them up. Leveling up a hero is fairly simple. Just play any type of match: Practice, Casual, Ranked, Arena. Win or lose, the hero will gain XP good toward the next level advancement. Every few levels earned unlocks a new card.

Win three games of Hearthstone to get the "Mount Up!" Hearthstone quest reward. Log out, then log back in. Go to a mailbox to get the Hearthsteed Elite mount. You will also earn the "Hearthstoned" achievement in Battle.net.