In Campaign, unlock all attachments for any weapon.

In Campaign, kill 20 enemies while flying the same Talon.

In Campaign, kill 10 enemies in under 3 seconds.

Loot 200 enemies.

Kill 50 enemies with the bow.

Complete Main Quest Chapter 1.5.

Find 25% of GPS caches.

Kill 25 unaware enemies.

Force an enemy to drop dynamite that kills two people when exploding.

Find 25% of all documents.

Complete one optional tomb.

Unlock the Medieval Armor in the Café Théâtre.