BioShock 2 achievements

Completed all research on every subject in Rapture.

Became a Big Daddy for the first time in a non-private match.

Took down your first Big Daddy in a non-private match.

Kill a Lancer Big Daddy

Found every Power to the People weapon upgrade in the game.

Won your first non-private match.

Finished the game without using Vita-Chambers.

Found or purchased all 11 basic Plasmid types.

Completed your first non-private match.

Joined forces with Sinclair in Ryan Amusements.

Scored your first kill in a non-private match.

Found 100 audio diaries.