Get 25 headshots using the Bolt-Action Rifle

Shoot a bottle out of the air

Purchase all skills in a single category

Perform a 2.5 second or longer swan dive

Complete all Challenge Tombs

Defeat a Deathless Swordsman using only melee attacks and a finisher

Perform 25 special stealth kills with the knife

Drown 3 enemies using a water finisher

Kill any animal with an explosive

Recover the Atlas

Fully upgrade any weapon

Melee kill an enemy using a bottle