Entertain the Persian harem

Finish all beam walks

Defend the Shores of Attica

Fully distract 25 enemies with rocks (Single Player only).

Craft a special syringe.

Gather all "Letters of the Lost".

Liberate all outposts.

Complete "Sidetracked" Co-op map (Online/Offline).

Dive more than 60m (Single Player only).

Attend the final ceremony.

Complete Riley's interrogation.

Kill 4 enemies simultaneously with one explosion (Single Player only).