Upgrade a building in the Stronghold.

Complete DNA Sequence 2.

Defend a woman's honor.

Break out of Abstergo.

Inspect almost every display case in the Cartagena Museum

Finish the game in Normal Mode

Kill 30 enemies with the M79

Kill 50 enemies with the Moss - 12

Kill 20 enemies with the Wes - 44

Kill five enemies with a single punch, after softening them up with gunfire

Defeat ten enemies with propane or acetylene tank explosions

Finish the game in Crushing Mode

Defeat 30 enemies with the Wes - 44