Cheevo found in H > Zones > Rift > Shimmersand
A Classic Treasure
Route to the Puzzle
The puzzle is a game called peg solitaire, it also has many other names such as Chinese Checkers
you need to move the pegs/lights around the game board, when you jump over a peg/light that peg/light will disappear, keep making moves til you only have one peg/light left.
There are loads of guides on the internet for how to complete this puzzle, I have consolidated one of them for you..