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Hearthstone: Puzzle Lab Guide - Lethal, Mirror, Board Clear, Survival

The full lowdown on Hearthstone's new upcoming single-player content

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About John Bedford

John is Metabomb's Editor in Chief, and is responsible for all of the Hearthstone news, features and guides content on the site.

Our Hearthstone Puzzle Lab guide explains the Lethal, Mirror, Board Clear and Survival puzzles, with tips, solutions and walkthroughs to be added for each one at launch.

A little earlier on today we learned the first details of Hearthstone's next expansion, titled The Boomsday Project. Given that the reveal trailer appeared ahead of the promised 12th July announcement, it's widely believed that someone pushed the button a little earlier than planned. Oh well, these things happen.

In the last hour or so, however, the official website for the expansion has actually gone live, bringing us a clearer overview of all the initial details that leaked out earlier today. One of the most interesting discoveries surrounds something called The Puzzle Lab, which appears to be the single player portion of the upcoming expansion.

The Puzzle Lab is separated into four distinct challenge types, from clearing down the board altogether to creating a perfectly mirrored battlefield. It's not yet known how many puzzles exist in each category, but we're looking forward to getting stuck into what will no doubt be some seriously taxing encounters.

In this first edition of our Puzzle Lab guide, we've got an overview of everything we currently know about the feature, including a first look at the card back reward for beating the mode. When the expansion actually goes live, we'll add in solutions and tips for beating each puzzle.

Puzzle Lab: Lethal

Destroy the enemy hero

In this experiment, the assistant is tasked with neutralizing the opponent in one turn using the cards at their disposal. We expect this will provide valuable insights into the destructive properties of many of our inventions.

Puzzle Lab: Mirror

Create a perfectly mirrored battlefield

These tasks challenge the assistant to create a board state where both sides are perfect mirror images of each other: minion positioning, health, attack, etc. This should yield plentiful data on various means of board manipulation.

Puzzle Lab: Board Clear

Clear the battlefield of minions

Pretty straightforward: clear the board of all minions. Our research suggests that minions play an important role in winning matches, and this set of challenges will help us better understand how to get rid of them.

Puzzle Lab: Survival

Survive the enemy Hero Power

Finally, the Survival trial requires the test subject to restore their own health in order to survive their opponent’s next onslaught. A recent study has shown that dropping to zero health inversely correlates with winning games, and this experiment will further explore that relationship.

Finally, here's the card back you'll receive for beating the Puzzle Lab challenge:

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