For this achievement you will need to have collected enough "Prestige Points" to unlock "The Shrine". This is automatically done once you reach the required number of points and does not need a point to be spent in order to unlock it. Once you have reached this point, Purchase "The Shrine" from the "House of Shards" for 1M Shards. It will be built and you must spend 9 Gnorps to purchase the "Find the chosen one" Upgrade. A line of Gnorps will gather outside your shrine. All but the last will die, The final one will pull the sword from the stone and float over to the stone. Once it reaches there it will begin hitting the stone and this achievement will unlock.