Defeated the Preacher.

Complete all chapters on Professional.

Killed 50 enemies using only hacked Security.

Carried the burden of guilt to the end of the line.

Defeat a certain enemy by stabbing it in the heart.

Installed the third upgrade to a weapon.

Maxed out one Research Track.

Defeated 3 Big Daddies without dying during the fight.

Evaded pursuers, though memories of the past still gave chase.

Chain the maximum number of combos together in one go.

Researched a Splicer with the Research Camera.

Joined forces with Sinclair in Ryan Amusements.

Paid your respects to the founder of Rapture.