Performed a roll in Arcade mode.

Scored your first kill in a non-private match.

Headed to the surface on the side of Sinclair's escape pod.

Gained access to Lamb's stronghold.

Hacked one of each kind of machine.

Gathered 600 ADAM with Little Sisters.

Spent 2000 dollars at Vending Machines.

Researched a Splicer with the Research Camera.

Joined forces with Sinclair in Ryan Amusements.

Adopted a new Little Sister for the first time.

Defended yourself against Lamb's assault in the train station.

Found your way back into the ruins of Rapture.