"Clear the last jungle" is a mission objective in Sequence 10 / Memory 03: The Observatory
Walkthrough[edit]
Head into the final jungle. It is a lot simpler to handle than the past few areas. Head across the free run course above the water to the East to claim an Animus Fragment. Head to the middle of the slope going upward. Use Eagle Vision and look around the top. Advance slowly as there is a Guardian sitting in the Stalking Zone to the left of the angled tree. Take him out however you want and get on the tree. Look on the opposite side to find another Guardian waiting there. Tag him with a Sleep Dart then go across and duck into the Stalking Zone. Be sure to knock him out.
Turn to the West and follow the path along the river. Collect the chest to gain some riches then follow the path to the South. It will not be too long before you reach the remains of some black stone stairs. Climb them and duck into the Stalking Zone to the right ahead of you. Look to the Southeast, toward the Viewpoint. There you will find 2 more Guardians patrolling. Tag each with Sleeping Darts and knock them out carefully. You can also just engage them in a fight and take them out that way. Be sure to also check the Stalking Zone in the Southeastern corner to find the final Guardian hiding there.
