Mission: crow's nest
In the sub mission gift with purchase:
remeber the part where you drop off in a hole in the ground and lead you to a swarm ambush (swarms are the insects) in a tunnel, the swarms attack from a smaller holes near the floor and wall, when reach the edge of the floor, do not jump in the circular room (with the giant fan) you must get to the edge and hold back your controller, theres a little edge, if you do it correctly you will be under the place where you were ambushed and lead you to the skull, be careful you can not reach the edge if you fall in the bottom of the circualr room, so if you fail you need to reload a checkpoint