You completed the mission "I'll Take Her".

You unlocked all the islands.

Re-Enter the Animus.

Kill Hoyt.

Use your wingsuit to reach the Southern island.

Buy all attachments and paint jobs for one weapon.

Survive the encounter with Vaas and escape.

Kill an enemy with a takedown from above from a glider, zipline or parachute (Single Player only).

Dive more than 60m (Single Player only).

Kill a target from 70m or more with the bow (Single Player only).

Craft 25 syringes.

Freefall more than 100m and live (Single Player only).

Liberate 3 outposts.