Open 50 chests.
Opening chests takes action points, and various chests have different levels of action points to open.
There are five levels before the achievement pops. The meter will keep track of how many you've opened under the achievement tab.
There are seven different types of chests.
* Chest of the Mountain Crystal (20 action points) - a mirror puzzle; you must pass the laser through all the mirrors to the end point for it to open
* Chest of the Abyssal Pearl (20 action points) - an 'eating' puzzle; you must use the shell to eat all the pearls on the board without touching the same place twice.
* Chest of the Winged Unicorn (25 action points) a tangram puzzle; you must place all the shapes in the correct place in the board - all shapes must be used, none overlapping, no spaces left.
* Chest of Stone Winds (25 action points) key puzzle; you must move the objects blocking the key from entering the lock - the key can only go in a straight line, blocking objects can only go up and down or left to right.
* Chest of Forgotten Mage (25 action points) knot puzzle; untangle the ropes so none of the lines are touching.
* Chest of Healing Potion (25 action points) tube puzzle; you must connect all the tubes so that the sand makes it to the other side.
* Chest of the Forest Elves (15 action points) color puzzle; you must connect each corresponding color to the other without crossing over any of the other lines of color.