Playing Pretend
For the second of the three quests available, you have “Playing Pretend” which asks you to earn three Gold Medals in three Public Events while wearing the Tiger mask, then loot 10 Engrams while having the Cryptarch mask and finally “trip” off of the Tower while Atheon’s mask.
These are particularly difficult and the hardest part is getting the masks. I highly recommend using Destiny Public Events, this will help you find those pesky Public Events. Looting 10 engrams isn’t too bad and as long as you have the mask, it shouldn’t take you very long. As for the “tripping” off of the Tower as Atheon, simply just jump off the railings anywhere in the Tower.
Once more, collect “Gifts of the Lost” for your mask, candy and other goodies. Possible Jackolyte or Flight of Shadows.