You will only need to find one of the three Easter Eggs in order to receive the trophy at the end of the game.

In the woolshed at Mossburn, you will find a wood-burning stove.



Open and close it seven times. An egg will magically appear!

In the Puzzle Palace, play Monster or Raid! five times.



You will earn an egg as a reward.

In the cave north of Te Anau, locate the fire bowl.



Before lighting the fire, click on the bowl while holding one of the other two easter eggs. When you do this, you will receive the old egg back, and a brand new egg will emerge from the bowl!

Pick any egg from your inventory then click on the scoreboard at Base Camp. You can use all three eggs to add points to your team's score.